"Chuck" is back! After teetering at the brink of cancellation before getting a last-minute reprieve - thanks in part to a save-the-show campaign where fans showed their support by buying sandwiches at show sponsor Subway - the ordinary-guy-spy show is back on TV, and even earlier than expected.

"Chuck" is back!

After teetering at the brink of cancellation before getting a last-minute reprieve - thanks in part to a save-the-show campaign where fans showed their support by buying sandwiches at show sponsor Subway - the ordinary-guy-spy show is back on TV, and even earlier than expected.

And I'm so excited to see Chuck and Sarah, Ellie and Awesome, Casey and Morgan, and Jeff and Lester again that I'm willing to forgive the two-hour season premiere for being a little uneven.

Now, before I launch into the slightly convoluted plot description, know that if you're new to the show, it's really not hard to figure out what's going on. Basically, there's a will-they-won't-they love story, a lot of kick-ass action scenes, plus the fun of watching a geeky big-box-store employee get thrown unwillingly into the world of espionage.

The setup this season is that soon after the Intersect (a super-secret CIA database) was erased from Chuck's brain, thus freeing him from the double life he'd been forced to live, he chose to re-download it in last year's finale. With the new and improved Intersect, Chuck's now able figure out how to do really complex things, like martial arts or playing mariachi music.

To do so, he has to make himself flash, like he used to do whenever he saw people who were really arms dealers or double agents. Except for he still flashes on those things, too, which is a little confusing.

Complicating things even more is an out-of-sequence account of how Chuck fails out of his training to become a real spy, messes things up with love interest Sarah (who he was thisclose to finally hooking up with at the end of last season) and ends up working at the Buy More once again.

By the second hour, though, things felt like they were back on track. I'm happy to report that "Chuck" is still the most unabashedly fun hour of television on the air right now.

Note: After Sunday's two-hour premiere, "Chuck" returns to its regular timeslot at 8 p.m. Mondays.