Quivering Blade. While it may seem like a waste of an elite slot (most of the time it is), when I simply can't decide what elite to take into an area with my build I will throw it in. Its 5 Adrenaline and does as much damage as the 8 Adrenaline Galrath Slash/Silverwing Slash. Actually I used it a LOT more when it was 4 Adrenline and caused daze if it was blocked (i forget what it was actually) but since I was running I solid warrior build dazed didn't affect me (affects spells only)
Skull Crack is also a pretty good skill if you know what you're doing, you can be devastating to a caster.
I also never see anyone using Grenth's Balance...awesome skill. Period.
As well as all mesmer skills, lol :P
B




, which means I have to mention cleave. Unless I know there will be blocking in which case I'll take whirling axe, I always take it.