What you say "the internet" what is the first thing I think of?
That "Internet" is spelled with a capital 'I.'
Ba-dum-tish!
Sorry about that, I'm still just licking an old wound from college when one of my journalism professors reamed me for spelling it lowercase.
In all seriousness, I think of online gaming, or the games that really got me into online gaming. For PC, that'd probably be Team Fortress Classic, and for consoles, it would be the SOCOM series.
Good times...