The only ones I can't confidently say I can do are these three:
55. Tackle steep drops on a mountain bike--define "steep"...I can't downhill comfortably.  I can rappel and belay, both with commercial and hand-tied harness, though, and I'd say that's more practical.
68. Throw a spiral--football was never my thing, though I would counter being able to throw a frisbee, juggle (both 3 and 4 items), and hack a hacky sack should be interchangeable here.
83.  Coolant hydrometer--This one I plead ignorance on the basis of living in Arizona, where it is below freezing three nights a year.  We don't even run antifreeze--just straight water with Water Wetter for anti-corrision
Other comments on stuff I 
can do: 
7. Use a stick welder--stick welders suck, most hobbiests have migs these days.  Stick welding is like using a pair of pliers to hold a pencil that shoots out molten metal and fire while it tries its best to stick to whatever you are welding and ground out.
13. Escape a sinking car--just roll down the windows to let the pressures equalize
69. Fly a stunt kite--one up...I can make a stunt kite!
72. Tie a bowline--I use a trucker's hitch way more than I use a bowline.
74. Whittle--not before they can sharpen a knife
95. Infrared thermometer...it's just point and click, quite brainless in fact.
Good list!
A lot of this is thanks to Boy Scouts.
-----Added 6/10/2008 at 12 : 31 : 32-----
	Quote:
	
	
		| 
					Originally Posted by Willravel  EAnd where is whistling? I can't support any list without whistling; it's the perfect instrument. | 
	
 Argh, my manly Achille's heel.  Despite years of trying and my best efforst, I cannot whistle with my fingers.  I feel less of a man because of it. 
