For someone who's an anti-drug boy scout, I'm shocked at how much I love Showtime's "Weeds," one of the best comedies on television that has its second season finale tonight at 10. But I guess I shouldn't be shocked. The show may have a pot-growing business backdrop, but it's really about the chracters, none of whome are all that likeable. But they are funny. Even better, "Weeds" has some of the best plot twists on TV.

Those "Weeds" surprises continue tonight. Suburban pot dealer widow mom Nancy Botwin (Mary Louise Parker) finds herself in a pickle when the DEA agent she married for convenience (guest star Martin Donovan) demands she and Conrad (Romany Malco) sell their pot stash and give him all the proceeds.

Meanwhile, Nancy's youngest son Shane (Alexander Gould) is about to graduate from elementary school and senses his mom may be in trouble.

"I've been doing some research on the Internet and really think Pittsburgh is the place for us," he announces when Nancy suggests the family may pick up stakes and move. After a gun goes off in the house, Shane says, "This would have never happened in Pittsburgh."

The episode, titled "Pittsburgh," ends with a nail-biting cliffhanger involving multiple characters. Showtime hasn't yet renewed "Weeds" for a third season, but it seems likely. I can't wait for this clever comedy to sprout anew.