During the reg match I promised someone on my team (I think it was Neg but I might be wrong) to post some sites where you can watch proper Team Fortress 2 matches. The ones I know are:

http://pwnage.tv/ (go to On Demand Video and then to Team Fortress 2)
http://www.quadv.com/content/view/273/61 (order by game and then Team Fortress 2)

Hope this helps and/or entertains some people. The commentators can sometimes be annoying but I learned some nice tactics by watching the top teams play.

These two links were already posted on the Forums, but I don't think it can hurt to post them again.
http://www.redrum-demos.net/
http://www.gotfrag.com/tf2/demos/

There are a lot of quality demos on these sites. You can only watch the most recent ones though, as any TF2 update renders the old ones useless.

Also for demos:

http://demos.nocrits.com/
http://etf2l.org/about/demos/

If a demo doesnt work its most likely because it was recorded before the medic update which broke previously recorded demos.

ETF2L (biggest european TF2 league) just partnered up with pwnage.tv as well, so expect to see more TF2 matches on there.

Also theres some SourceTV demos of the HH league team games if you want to see the real pros

All old ones wooj

Yeah they mostly old ones, the ETF2L site ones are all recent i think. The other site, only those recorded in may work, theres a few up there from Sir Eremoo (i think thats his alias) if u wanna watch some demoman action.