Fancast has entire episodes of many tv shows available online - free. And yes, they have Firefly and Buffy.Now you can blame me for your lack of productivity.
Crooksandliars has compiled a list of the 100 best standup comedians of all time - with links to Youtube clips for many of them.
I spent most of yesterday editing a paper with my two colleagues. I like working this way - all three in a room (or in a conference call), arguing over each line, suggesting alternate phrasings, etc....
It's noisy and contentious, and takes time, a good self image, and an even better sense of humor (or we'd end up killing each other). But generally, if you can get three people to agree on something (or at least to not be vehemently against something), chances are, it won't suck.