David Letterman's Top 10 Most Memorable Moments -- So Long, Dave!

5/20/2015 12:01 AM PDT

Over the course of his 33 year career, David Letterman has brought countless memorable moments to late night TV -- but a few stand out among the rest.

As we say goodbye to the comedy legend, let's take a look back at the best bits we'll never forget -- in true Letterman fashion ... with a Top 10 list!

10. Frequent guest Warren Zevon's final appearance before dying

9. Dave walks out on Joan Rivers

8. Lady Gaga eats Letterman's paper

7. John McCain wishes he didn't stand Dave up

6. Joaquin Phoenix loses his mind

5. Madonna drops the f-bomb -- a lot

4. Dave returns to TV after 9/11

3. His Carson tribute after Johnny's 2005 death

2. Drew Barrymoore's b-day peep show

1. Dave's first episode with beloved guest Bill Murray