There's a small selection of weapon skills which work with both melee and ranged weapons, mostly roguish in nature. I may have missed one or two, but the following are the ones I know of:
At-Will: Fading Strike, Sneak Attack, Thunderbrand
Recharge: Dirty Trick, Get Over Here, Mark for Death, Rend, Shell Cracker
Encounter: Dastardly Trick, Deadly Shadow
Ultimate: Assassinate
I also picked out a few non-weapon skills which sound like they might be of interest to you:
At-Will: Equanimity, Equilibrium, Guarded Stance, Intuition, Tranquility
Recharge: Dominance, Kiaijutsu, Tackle, Warcry
Encounter: Bull Rush
Ultimate: Unbreakable