Sorry to continue the COD4 theme here but these were quite epic by my standards. Playing HCHQ with my clan on shipment, got a 32 kill streak that included 2 airstrikes. Didn't kill any of my own team with either, one airstrike killed each member of the other team TWICE. Ended up being 44/3 after 5 mins, 121/15 for the game.
My clan were loving it because the other team were trying to hunt me (unsuccessfully) and getting massacred.
a few other instances, deagle sniping on crossfire, got a double headshot, laughed hard at that...17 kill-streak with just my deagle in that game. Didn't call my heli til i died...
On wetwork playing with randoms ended up being 108/8. Other team were brand new accounts, I think one player on that team had a k/d of 0/52... felt a bit guilty about that. in the course of that game, only one player from the original six stayed on the other team, the others all rage quit and abused me via PSN. That's when I stopped feeling guilty.