Thursday's TV Highlights: 'The Dudesons in America'
World's Toughest Fixes: In the season premiere, Sean Riley heads to Wyoming, near Yellowstone National Park, to help rebuild one of the first ski lifts in the country with the help of a special helicopter (6 and 9 p.m. National Geographic).
The Office: A suspicious Michael (Steve Carell) thinks his girlfriend (Amy Pietz) is cheating on him and asks Dwight (Rainn Wilson) to investigate in this new episode (9 p.m. NBC).
30 Rock: Staff members' moms visit for Mother's Day: Liz (Tina Fey) meets her mother's (Anita Gillette) old flame and Jack's (Alec Baldwin) mother (Elaine Stritch) gets involved in his relationships. Jan Hooks, Patti LuPone, Novella Nelson, Buzz Aldrin and Cheyenne Jackson also guest star in this new episode (9:30 p.m. NBC).
The Marriage Ref: Gwyneth Paltrow, Greg Giraldo and series producer Jerry Seinfeld serve on the panel (10 p.m. NBC).
Heavy Haulers: In the premiere, a blizzard complicates things for a family trying to move a historic brick factory that stands three stories tall and weighs nearly 1,500 tons (10 p.m. TLC).
The Volcano That Stopped the World: This new documentary is about the volcano eruption at the Eyjafjallajokull glacier, that stopped air travel across a large part of the planet (9 p.m. Discovery).
Barfly: Hard-drinking writer Charles Bukowski based his screenplay for this 1987 drama on his own life. Mickey Rourke stars as a sometime poet and all-the-time drunk, whose lonely life gets less lonely — but more complicated — when he hooks up with a fellow lush (Faye Dunaway), then meets a pretty magazine publisher (Alice Krige) who is interested in his work (8 p.m. MyNet).
Baseball: The Angels visit the Boston Red Sox (5 p.m. FSN); the Milwaukee Brewers visit the Dodgers (7 p.m. FS Prime).
Basketball: NBA playoffs: The Atlanta Hawks visit the Orlando Magic (5 p.m. ESPN).
College volleyball: NCAA Tournament, semifinal: Cal State Northridge vs. Penn State (6 p.m. ESPN2).