Vaguely amused, enjoy the breeze
Peeps...why you no like walking on walks? I mean, who hasn't ever wanted to walk on water and on the walls? However you could achieve that in a sense by thoroughly abusing the ground-air effect and utilizing some anime-logic, in which case it would not even cause Stephan Hawking to blink. Which for him is the rough equivalent of talking, so for the purposes of this conversation, he wouldn't bat an eyebrow.
Personally, I'd take the Clone Technique, just think...you could experience, know and learn soooo much!. Chores wouldn't even matter anymore, school would become a leisurely activity with eight different brains working all at once. No...I'm sorry, but the Shadow Clone Technique beats everything there. Unfortunately this is for KKG, so I'd just say....Yamanaka(Mind rape, and total pranking abilities.), Nara for groping rights. I saw a half decent pic of Shikamaru feeling up Temari with his Chocking Technique. I thought it fairly inspirational to all males around. And females as well I suppose. If a male approaches you with a knife, he only wants to cut your clothes off, not lactate your body. I also wouldn't mind a portion of the Akimichi Clan jutsu, to expand a certain organ. (If you know what I mean.) Also...you'd get some good raging abilities with Dead Bone Pulse. I guess that's me though. Still, my fav is the shadow clones.