The stars of "The Hangover" have gone from virtual anonymity to having celebrity impersonators on the Vegas Strip along with slot machines, bobbleheads, T-shirts and shot glasses devoted to their bad-boy blockbusters.
"Vegas is a little bit of a different experience this time around," Ed Helms, who plays Stu the dentist in the third and final "Hangover," said in a recent phone call. "But, that said, it's always shocking to me how indifferent the Vegas population is to anything, be it celebrity or just chaos going on around them.
"I can remember on the first 'Hangover,' we would walk through the casino in full makeup, all beat up and dirty and bruised and no one would even bat an eye at us.
"Even though our faces are synonymous with Vegas at this point, we can still kind of move around. Everyone's in their own world, it's interesting that way. If we do get spotted, it can turn into a little bit of a mob situation fairly quickly."
Actor Zach Galifianakis is lucky enough to have a ready-made diversion in an Alan (his character's name) impersonator. There is a Stu lookalike, but he doesn't seem to mingle with the masses as frequently.
Mr. Helms, 39 and a native of Atlanta who graduated from Ohio's Oberlin College in 1996, has been in the middle of quite the goodbye tour.
"The Hangover Part III," now in theaters, brings the comic trilogy to a close and "The Office," in which he played erstwhile salesman, regional manager and aspiring actor and singer Andy Bernard, finished its nine-season run last week.
Although suggesting there are infinite stories to tell about the Wolfpack -- played by Mr. Helms, Mr. Galifianakis and Bradley Cooper, with Justin Bartha on the "Hangover" fringes -- he supports the decision to put "The End" on the franchise.
"I'm glad that Todd [Phillips, director] and Warner Bros. and all of us are on the same page that you leave well enough alone, and that three is just a really great number. And it feels like a complete cycle for these guys, and sometimes it takes courage to cut something off when there are dollar signs down the line but it just feels like the right move."
In last Thursday's finale of "The Office," Andy got the chance to recover from the humiliation he suffered after a meltdown during a reality-show tryout. Andy landed his dream job with his character's alma mater, Cornell University but, beyond that, delivered one of the sweetest lines of the night.
"I wish there was a way to know you're in the good old days before you've actually left them," Andy observed. The Nard Dog, as he called himself, had nailed it.
Asked how it feels to have his big-screen and little-screen adventures conclude in the same month, he confessed, "It's completely bonkers. It's like these two things that have defined not just my career, but my life, for the last eight years are suddenly stopping cold, two weeks apart.
"I'm very sad about that, just on a personal level because I love all these people so much, both from 'The Office' and 'The Hangover.' And creatively, they're both two of the most inspiring things I've ever had the privilege to work on, but I feel ready and excited about what's ahead.
"I don't know what it is, but I've never been one to sit around, and so there are a lot of irons in the fire and a lot of exciting possibilities ahead and life moves on."
In August he will return to theaters alongside Jennifer Aniston and Jason Sudeikis in "We're the Millers," and he recently filmed a role in David Wain's comedy "They Came Together" starring Paul Rudd and Amy Poehler.
"We go through these huge changes if we get transferred for a job or get married or divorced. A loss, a gain in life, it's just all part of this rollercoaster."
That has been his chosen metaphor -- the rollercoaster with all of its ups, downs, crazy turns and disappointment when the ride glides into the station. "It's a bummer, you're really sad you have to get out but you might get banged up if you stuck around too long."
He has endured plenty of indignities as Stu throughout the trilogy and that holds true for a final scene in the new comedy.
"Going back to the first 'Hangover,' every time I read these things that happen to Stu, my first reaction is 'No way I'm going to do that, that's horrendous and awful.' And then, for some reason, it sinks in a little bit and Todd is extremely persuasive and I do it and then I see it in the movie and it makes me laugh and I'm incredibly glad that I did it and I'm grateful to Todd for pushing me out of my comfort zone.
"It's a funny thing, what I love about Stu is how tightly wound he is and how reasonable he's always trying to be. He's kind of the voice of reason of the movie but he's also really a little too reasonable, always trying to keep things too calm, in a way. Of course, he's the one we want to see squirm the most.
"A guy that uptight, when his id comes out, it's that much more insane, so ... when they're out on the town in a blackout, he's the one leading the charge of insanity."
Mr. Helms didn't leave Dunder Mifflin, the fictional paper supply company in Scranton on "The Office," without a few souvenirs. He snuck out with Andy's Cornell diploma, his certificate of achievement from an anger management program and a photo of Here Comes Treble, Andy's a cappella group.
In real life, Mr. Helms sang in the Obertones a cappella group during college and later had a five-year run as a correspondent for "The Daily Show" in addition to amassing movie credits, including speaking for the Once-ler in "The Lorax."
On June 8, he will deliver the commencement speech at Knox College, a small liberal arts institution in Galesburg, Ill. Previous speakers have included then-U.S. Sen. Barack Obama, comedian Stephen Colbert, former President Bill Clinton and onetime Secretary of State Madeleine Albright.
He wasn't tipping his hand on his talk, saying only, "I think any responsible commencement speech has a little meat to it, but I would definitely be upsetting expectations if I didn't have a few chuckles in there, too, so it's a little bit of both. ... There are some pretty big shoes to fill at Knox College, so I'm doing the homework. It should be a lot of fun."