I'm sure Mr. Segel has perhaps at one time had a not so cool job, but based on his IMDB profile he has been working in the entertainment industry since 1998 (they don't include any of his time at Boulevard3 as a go-go dancer...I swear I saw him in a banana thong there once)
Here is a quick Timeline of shows and movies you might have seen him in
(sorry Mr. Segel, I omitted a lot due to sheer ignorance and indifference)
1998
"Can't Hardly Wait"
Watermelon Guy
1998
"SLC Punk!"
Mike
1999-2000
"Freaks and Geeks"
Nick Andopolis
2001-2002
"Undeclared"
Eric
2002
"Slackers"
Sam Schechter
2004-2005
"CSI"
Neil Jansen
2007
"Knocked Up"
Jason
2007
"Knocked Up"
Jason
2008
"Forgetting Sarah Marshall"
Peter Bretter
2009
"I Love You, Man"
Sydney Fife
2005-2010
"How I Met Your Mother"
Marshall Eriksen
thanks IMDB!
