Us second-shifters never get to watch, and windows media player has ceased buffering correctly since ver. 10.
H.
I don’t know about clips, but full Daily Show episodes are available on suprnova.org, usually a few hours after airing.
The official comedy central site has a bunch of clips:
http://www.comedycentral.com/tv_shows/ds/videos_corr.jhtml?p=stewart
I’m a second-shifter, and I watch the one o’clock showing almost every night.
Failing that, suprnova.