1. His cat jokes.
2. His tweets and e-mails segment.
3. "G.P and The Fergs"
4. The rants.
5. The remotes.
6. His love for Doctor Who.
7. He has THE best musical openings.
8. Two words: singing puppets.
9. The "Cussin'" Rabbit.
10. The times when he just couldn't keep it together.
11. The phone calls.
12. His stellar dance moves.
13. The old-timey lingo.
14. All that sass.
15. He made late night television educational.
16. Whatever this is.
17. His confidence.
18. He's creepy, but we love it.
19. He's quirky, Scottish, and...
20. He allowed guests to ride Secretariat, which made for great moments like this.
21. Every. Single. Impression.
22. The catch phrases.
23. Lastly, he had one of the best friendships in late night TV history.
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