In no particular order, and some of these people may not be guest stars I'd particularly want on the show but it would happen anyway: 1. Matt Smith (the current Doctor on Doctor Who) 2. Jason Segel (of course) 3. Dr. Ken Jeong 4. Zach Galafinakis 5. Bradley Cooper 6. Ed Helms 7. Megan Fox 8. Mickey Rourke 9. David Tennant (the previous Doctor) 10. Beavis and Butt-Head, and for anybody who argues this one, Alice Cooper hosted the original show first of all and second of all, if B&B can interview Snooki on Jimmy Kimmel, they can do this. I figure they'd sneak in after doing some kind of unrepairable damage to the planned guest star. 11. The Rock 12. Jason Bateman 13. Betty White 14. Jamie Foxx 15. "Weird Al" Yankovic 16. Selena Gomez 17. Zac Efron 18. Angus T. Jones Feel free to add to the list, folks!