Dennis Miller is the guy that Professor Fink implied wasn't funny, remember??
I don't think guest hosts are too bad if they're not all over the show. Just have them come out, make a few matches, maybe a backstage segment and leave it at that. Though that kinda defeats the purpose of having a different host every week, which means they'll try various wacky things with them and.... I don't know where this is going.
You can usually tell if the hosts have any knowledge of wrestling. I mean, that does help when you're hosting a wrestling show. Snoop Dogg, who I wasn't holding out much hope for, was actully alright.
(Still waiting for Bruce Forsyth...)