Last night Triple H stopped by the show with a grand entrance. And last week, Ken Jeong challenged Jon Cena to a rematch in the wrestling ring. We have got some professional wrestling all up in this show! But professional wrestling has been hobnobbing with non wrestling stars since it's beginning. It's history is chocked full of stars. There are so many!! Here are just a few. Who else ya got!? Get in the ring and show me! (The ring is in the comments.)
1. Mr. T

Mr. T was one of the first celebrities to appear at the first Wrestlemania. He wrestled Hulk Hogan for the main event.
2. Robert Goulet

The Goouuu sang "O Canada" at WrestleMania VI.
3. Cyndi Lauper

Cyndi managed Wendi Richter in her match against The Fabulous Moolah in Wrestlemania I. Also, wrestler Captain Lou Albano appeared in her several of her videos.
4. Burt Reynolds

He was the announcer for Wrestlemania X's Main Event.
5. Jay Leno

He defeated Hulk Hogan in a tag team match at Road Wild (with the help of a Kevin Eubanks interference).
6. Mickey Rourke

Off the heels of The Wrestler, Mickey defeated Chris Jericho at Wrestlemania XXV. Ram jam!
7. Pete Rose

Rose has appeared multiple times chokeslamming Kane, announcing, and disguised as the San Diego Chicken. Which brings us to...
8. The San Diego Chicken

The actual San Diego Chicken rushed the ring at Wrestlemania XV to taught a referee. He was soon knocked to the ground.
9. William "Refrigerator" Perry

He wrestled in the Battle Royale at Wrestlemania II. He was a celebrity inductee to the WCW Hall Of Fame in 2004.
10. Ray Charles

He sang "America The Beautiful" for Wrestlemania II.
11. Shaquille O'Neal

He appeared on Monday Night Raw and started a rivalry with The Big Show.
12. Pamela Anderson

Acted as Diesel's valet at Wrestlemania XI.
13. Regis Philbin

Regis was an interviewer at Wrestlemania VII.
14. Kevin Federline

Appeared briefly on Raw and slammed John Cena.
15. Boyz II Men

The boyz sang "America The Beautiful' at Wrestlemania XV.
16. Alice Cooper

Acted as Jake "The Snake" Roberts' manager for his match against the Honky Tonk Man in Wrestlemania III.
17. ZZ Top

The Top recently guest hosted Raw.
18. Donald Trump

Trump has been involved multiple times, including buying Raw and making it commercial free. Soon Vince McMahon bought it back.
19. Seth Green

Like the Top, Seth guest hosted Raw very recently.
20. Alex Trebek

He was the guest ring announcer for Wrestlemania VII.
21. Mike Tyson

Tyson was involved at Wrestlemania XIV, enforcing the ringside area and he got into a scuffle with Shawn Michaels.
22. Joan Rivers

She was a guest ring announcer at Wrestlemania II.
23. Liberace

He served as the guest time keeper at Wrestlemania I back in 1985.
24. Jonathan Taylor Thomas

JTT served as a guest time keeper at Wrestlemania XI. Believe it.
25. ROBOCOP

And in one of the most ridiculous moments in wrestling, Robocop appeared at a WCW match and saved Sting from a steel cage. He'd been put there by The Four Horsemen.
Have any more? Leave em' in the comments! (Thanks to the JYT for all the tips!)