What are your most favourite/memorable video game OST's?
I feel that the auditory aspect of video games is sorely underappreciated since the main focus of gaming these days are the OMG graphix! They can add so much to the experience and even make or break games. When I get gaming nostalgia guess what's the first thing about a game that springs to mind? THE MUSIC!
Feel free to post links of your favourite tracks and share!

I'll start with a classic!