When it comes to well known and well respected artists, they usually have a big number of great songs so there are plenty of hidden gems in their catalog. This may apply to tracks from their most popular albums as well, so just post some of your favorite MC's songs that kinda fly under the radar.
Eminem - Given that this is an Eminem forum, you guys have heard everything so I don't except to surprise you with my picks. With that being said:
Stimulate; If I Get Locked Up Tonight; Bad Guys Always Die; Get You Mad; Stir Crazy.
Big L:
You Know What I'm About - http://www.youtube.com/watch?v=Z_0lvEr-lXM
Unexpected Flava - http://www.youtube.com/watch?v=wYI9bHj87l8
How Will I Make It - http://www.youtube.com/watch?v=y0hCqU4wnTg
School Days - http://www.youtube.com/watch?v=o2V1Pgceogw
Alone - http://www.youtube.com/watch?v=u9ckqfAfEBc
Lupe Fiasco:
Make Sure - http://www.youtube.com/watch?v=yItGgmMeyx4
McFly - http://www.youtube.com/watch?v=9iZOtJTeGUg
Coulda Been - http://www.youtube.com/watch?v=rXDx3XkwS0o
Ghetto Story - http://www.youtube.com/watch?v=Sm0DUzGlQ-w
Dear Fall - http://www.youtube.com/watch?v=84UiGllyUsc
4 Real - http://www.youtube.com/watch?v=P4HLNAdg82A
What It Do - http://www.youtube.com/watch?v=UkgPp-ajbTo
Theme Music To A Drive By - http://www.youtube.com/watch?v=KgG3yN_6SuA
Kanye West:
We Can Make It Better - http://www.youtube.com/watch?v=2sZHbjipQGE
Last Call - http://www.youtube.com/watch?v=V9mwuYBljUA
The Good, The Bad, The Ugly - http://www.youtube.com/watch?v=ddbFb_fXboY
Nas:
Deja Vu - http://www.youtube.com/watch?v=X4qYox-Gb70
Nas Will Prevail - http://www.youtube.com/watch?v=n2AD6MRgFno
Good Morning - http://www.youtube.com/watch?v=wCrhscq56q0
In Too Deep - http://www.youtube.com/watch?v=ZKT0NqdVnYI
Reason - http://www.youtube.com/watch?v=7KpwQwjHHv0


