Well I've seen enough people doing it and also heard enough songs that I gotta jump in on this. So here is my top 10 video game songs/tunes! These aren't in a particular order, just more of the ones I would listen to any day and give me instant flashbacks to when I heard them ;D

1. Soul Blazer (Don't know the name of the song)
http://www.youtube.com/watch?v=ehRuJtxlzwE&feature=related

2. Lunar 2 Eternal Blue Complete - Brave Warriors
http://www.youtube.com/watch?v=MAEjzZpeTAg&feature=related

3. Final Fantasy Mystic Quest - World Map (If I could, this would be my theme walking around)
http://www.youtube.com/watch?v=zSwt3wqJnBw&feature=related

4. Xenogears - Bonds of Sea and Fire
http://www.youtube.com/watch?v=bET-_1NkvEc

5. Grandia - Theme of Grandia
http://www.youtube.com/watch?v=I0s3DQMbciY&feature=related

6. Persona 3 - The Battle for Everyone's Souls
http://www.youtube.com/watch?v=rdMhTL5bZrs

7. Wild Arms - Town Theme
http://www.youtube.com/watch?v=6MQRL7xws7w

8. Metroid Prime - Tallon Overworld
http://www.youtube.com/watch?v=mziw3FQkZYg&feature=related

9. Earthbound - Pokey Means Business
http://www.youtube.com/watch?v=I1QfIbLulf8&feature=related

10. Final Fantasy 9 - Court Jesters
http://www.youtube.com/watch?v=MpvYp-KcPxI&feature=related

And these next three are just extras ;D

11. Alundra - The Village of Inoa
http://www.youtube.com/watch?v=_clltNcg4-Q&feature=related

12. Super Robot Wars OG - Ships Full of Hope
http://www.youtube.com/watch?v=vel5bggyrJ8&feature=related

13. Super Robot Wars OG - Everywhere You Go
http://www.youtube.com/watch?v=N7Xh66iBTvc&feature=related

14. Super Robot Wars OG - Neppu! Shippu! Cybuster!
http://www.youtube.com/watch?v=4BtEDipm6ok&feature=related