I remember Eric saying once he'd like Janet Jackson to guest on the show. I was concerned at the time about how they could make that work, but I have to say they managed to use Paris Hilton tolerably well.
I think this show could find a purpose for just about any quirky guest star they come up with.
Perhaps you could arrange a visit during filming. I fully support that plan.
A Smallville crossover could be funny.
Enver and Claudia in the same episode. Yes!
Ooooh, Enver! I'd like to see most of the others, but most of the others have had more work than Enver. Boy needs some exposure. Perhaps he could get into a shirtless pull-up contest with Sam. You know, for very important plot-related reasons that I can't quite put my finger on at the moment.
Enver could play some sort of water creature, and he's always coming and going out of lakes and rivers and oceans, all wet and naked or having to strip out of his wet clothes... um
I want to see Ben Browder guesting on anything at this point. I'll tune in to Private Practice if it means he's getting work.
I could see Lynda Boyd doing a good FBI profiler or director on the trail of the dead bodies the Winchesters and Campbells leave in their wake.
Maybe Danica McKellar could play the next woman that sleeps with Sam and dies.
Damian Lewis needs to be on my tv again.