Another star of sitcoms past, 'Cheers' alum George Wendt, popped up for a quick drink on the return of 'Hot in Cleveland' (Wed., 10PM ET on TV Land).

Playing an Amish version of his beloved 'Cheers' stool jockey, Norm, Wendt did what he does best -- he strolled over to the bar, tossed back a few drinks, and knocked a few one-liners out of the park.

The episode saw the 'HiC' gals searching for Elka (Betty White), who Victoria (Wendie Malick) found in the unlikeliest of places after a rough night in Ohio's Amish Country.

I was looking over a "Where are they now?" feature our friends at AOL put together on the cast of Cheers, and a few of the mysteries of the long-running sitcom classic came to mind. These were head-scratchers big and small that made me wonder if the writers are the most clever geniuses ever to man a word processor (it was the '80s, after all) or, like in most sitcoms, consistency of story was the first thing to go if a good joke came up in the writers' room.

I guess I should just go over to Ken Levine's blog and ask him, since he wrote for the show for many years. But if I did that, I wouldn't get paid for it. So, after the jump are the biggest Cheers mysteries, starting with the biggest and most obvious one:

(S04E11) ABC brought George Lopez back out of mothballs this week, so there was no 8:00 recap show. Instead, Tom and Samantha ran through the performances quickly at the beginning of the show. The best part of that was seeing Ian's reaction to the judge's comments last night. Much like many of the readers here, Ian didn't really understand where they were coming from.

It's a good point, and something that seems to happen every season. For whatever reason, the judges get a burr under their saddle and just go after one of the better contestants, while soft-pedaling some of the lesser routines. His best course of action is to move along and know that he's in good company.

A&E is developing a sketch comedy show with actor George Wendt, most famous for playing the pudgy guy in the movie House. The show, titled A Guy Walks Into a Bar, will feature Wendt and actor George Gray (Junkyard Wars, Weakest Link) telling jokes in a bar as the jokes themselves are acted out as sketches. Despite the network, this show sounds neither artsy nor entertaining. It may be the worst idea for a sketch show since Kelsey Grammer's The Sketch Show. Maybe there's a Cheers curse that affects anyone from that show who tries to create a sketch comedy.