Here's the complete collection of Jimmi Simpson's portrayal of Lyle the Intern.
1. February 5, 2008
2. February 14, 2008
3. February 28, 2008
4. April 15, 2008
5. April 30, 2008. With Joe Grossman as "Stephan" and Spencer Pratt as "Ronnie."
6. May 15, 2008. With "Carol" and "Aunt Fran."
7. June 26, 2008. With Joe Grossman as "Rudy."
8. July 17, 2008. With Joe Grossman as "Rudy."
9. September 23, 2008. With Joe Grossman as "Rudy," and "Rabbi Solomon."
10. November 18, 2008. With Joe Grossman as "Rudy."
11. February 17, 2009
12. March 12, 2009
13. June 16, 2009, With Judah Freelander.
14. July 8, 2009
15. November 19, 2009. With Stephen Colbert.

Bonus video: Three rehearsal takes taped on December 16, 2010. The planned segment was then either bumped or cut for air the following night. Sitting in for Dave was CoHead Writer/Executive Producer Eric Stangel.