My first kill of a 70 was at lvl 50. I was in SS and a lock was ravaging the town. When I saw him, I dropped grounding totems and started nuking. Got him down to 50% with npc help, and you could see the grin dissapear as he realized he wasn't doing anything to me, and was dropping fast. He bailed out of the town towards the river, and got out of the NPC's and started dotting and nuking. I healed through and kept throwing lightning, and he went down without me losing one. He then SS and dropped 3 before I got him again. Doh! Anyways- I'm sure the NPC's helped- but that was my first 70 kill.

At 56 I took out a Paly, Lock, and Mage (all 70) outside the npc's in SS- though I had to rez the group a few times. >) I have to say I got pretty lucky with that one- think they were confused that I came back after the original gank upon arrival at the fp.

Not trying to brag- it is just so thrilling to run against odds like that and win.