Starcraft is indeed posssibly the best RTS out there. It is still being played by more than 30k at any given moment on the European server...

I lovethe ample opportunities for reverses in battles, you are never truly out for the count if you survive the first few minutes if you are rushed.
I was a rather good SC player in my day, and it was amazing how many strategies that were thought up, and how much attention was put into using the terrain to one's advantage.

In a very good 4v4 battle I had at a LAN party I got rushed early on, and you simply can't withstand four players, that is impossible. So I died... Jusu about as one of my probes (Protoss) managed to escape... A New Hope.

I ended up in a place where there was lots of gas but little minerals. What did I do? I went for for Dark Archons. It was brilliant! I arrived just in the nick of time to save my fellows (who had survived). One Terran attacked with a mass of Battlecruisers, and since I was the only Protoss on my team he considered them safe (thought they had killed me). Bam bam bam... and I had captured 10 and Feedbacked another 7, which my captured Battlecruisers then obliterated with ease.
To hear the loud "NOOOO" from the other side ofthe room was about the most beautiful I have heard when playing computer.