A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects." -Robert Heinlein

Okay, let's do a checklist version.
1.change a diaper- Yup.
2.plan an invasion- Probably. Never tried anything bigger than taking down a paintball base, though.
3.butcher a hog- In theory, yes, but I'm a vegetarian, so I probably have to pass on this one.
4.conn a ship- Basically. Not too sure about sailboats, though.
5.design a building- To the point of having walls and a roof and a floor that stand in concert, yes. Don't know if anyone would actually want to *live* in it, but... ;)
6.write a sonnet- Yup.
7.balance accounts- Frequently.
8.build a wall- Yes.
9.set a bone- Yes.
10.comfort the dying- Um. Yes. I think.
11.take orders- When necessary. ;)
12.give orders- I'm told yes.
13.cooperate- When necessary. ;)
14.act alone- Often.
15.solve equations- Not a math person, unfortunately - nothing complicated. :(
16.analyze a new problem- Tend to enjoy it.
17.pitch manure- Don't particularly enjoy, but yes.
18.program a computer- To a point. A very limited point.
19.cook a tasty meal- Certainly.
20.fight efficiently- Dirty fighting is how you win. ;)
21.die gallantly- How in hell should I know? I'm alive. :P

Seventeen out of twenty-one. Hmph. Not bad.
Hee. Heinlein. ^.^