Man, posting here always makes me nostalgic as fuck. I miss the good old days.
On topic, you old RS whores should pick up Left 4 Dead, Valve's latest game. It's the first FPS since RS that I've played for months straight and not gotten bored of. It's a very different type of game--zombie apocalypse vs. counter-terrorism--and it's not a realism shooter in the least, but it has more emphasis on teamwork than RS ever had.
A big update was just released yesterday, so Valve may offer a free weekend of the game on Steam, or perhaps put it on sale. Check Left 4 Dead out on YouTube; there are hundreds of videos of it, you can find out if you have an interest what it has to offer.
I'd be happy to show any GameRanger OGs the ropes in L4D.