Alright - so, my student loan came in yesterday - first purchase? PORTAL 2. Standard.
First of all, thank you UK tax payers ;-) Couldnt of afforded it without you.
Secondly, wow this game is too good. I seriously recommend it to anyone, its just... just FUN. Pure fun without any reservations. And Valve's sense of humor is brilliant.
P.S: Start thinking with portals!