I've watched a few matches recorded on some Korean Tournament. But it was kind of disappointing because, in most matches, one player would usually trump the other in the first 5-10 minutes with a risky hit/miss strategy; usually something that involved a lot of micromanagement. I want to know where I can see some big, long matches that make use of most of the map.
Youtube would be the most easy choice. If you are looking for a large database, Team Liquid had a pretty large amount of replays stored here.
or you can watch some of the previous videos on www.gomtv.net english commentated games Check Gomtv Season 1 Round 16 I think... Flash vs Memory Game 1.. 45 min of Terran vs Terran battlecruiser action xD
Go on StarCraft Legacy, and find the replays of the Pimpest Plays. Oh wait... the sites down. Try the 2004-2005 or something EVER OSL Boxer vs. iloveoov finals.