Right, here's a list of 20 PC EXCLUSIVES (well, mostly, there is at least one game on the list (A Song of Ice and Fire) which is also supposed to get ported over to the consoles too) for 2011, some of which are going to be awesome.
Games I forgot to list before:
Guild Wars 2, Sword of the Stars 2, The Witcher 2, Shogun 2 Total War, Red Orchestra: Heroes of Stalingrad (also another 2 really but thankfully bucks the trend of having a 2 in the name!), Stronghold 3 (hopefully, though the series went downhill after the first couple of games), Tropico 4 (still haven't played 3 yet though),
EDIT: Nice list there croxis, I forgot about that one. Someo f the games on it are not going to be released in 2011 though (like Infinity: A Quest for Earth).