A big part of the RTS foundation.
C&C. The grandfather of RTS. Took Dune and made it a huge mainstream success. Huge enough to really put Westwood on the map. Pokes fun at worldwide conflicts and makes it feel important at the same time. C&C is also the resurrection of full motion video cutscenes with people like Mr Kane. Command & Conquer was charm and pixelperfected realtime strategy set to the mindblowing soundtrack of Mr Frank Klepacki whos soundtracks still infects both my Winamp and my iPod. C&C1 set up the cornerstones for Red Alert to be built upon and it sparked something that is still going strong within the PC RTS scene. On a sidenote, did you know that Frank Klepacki has created the soundtrack to the recent (as of writing this) RTS game Universe At War? I played that game for many hours just to listen to the soundtrack and you should to. The man havent lost his edge with the modern heavy rock/electronica military metal !
