Tuck and Roll: You get up from knockdowns quicker then most. -2 seconds to the amount of time you stay on the ground. If this reduces the time to 0, you hit the ground and roll right back to your feet. (acrobatics)
Spellguard: You can channel energy into your shield. Blocking is 20% more effective, but consumes magicka every time its hit. (block)
Overpower: You are stronger then most, and this gives you an advantage in combat. If your strength is at least 10pts higher then your enemy, your attacks have a chance to disarm your opponent (if they block), or knock them down. (2-handed weapons) [on a side note, I'm sure attributes will be kept track of even if behind the scenes. If not, you may have to check skill vs skill or something]
Mana Flare: Your power can barely be contained. Spells do 20% more damage, and cost 30% more. (magic skills)
Surgical Precision: Sometimes, all you need is one good hit. Power attacks do 10% more damage and have the chance to paralyze (dagger)
Just off the top of my head