What makes you a "man?"

[Gnomey]

One who is trustworthy, loyal, helpful, friendly, courteous, kind, obedient, cheerful, thrifty, brave, and clean. I also like leadership, intelligence, and responsibility, as Sythe put in.

Well put. Sadly, not many express these qualities nowadays, man or woman. I label people that hold those qualities "successful", not man. Kudos on incorporating those though.

You forgot reverent. God hates atheist Boy Scouts more than fags.

I really hope you're kidding... Everyone knows intelligence > reverence. Who wants an idiot worshipping them?

 

[Moij1]

Regardless of attitude, a penis still makes a man a man.

What about people with both parts..?

I think a man is usually visibly a man, being characteristically different from women in a number of ways.
Or if you are asking the mind, i don't know. A woman can think like a man, be into all the 'macho' things, and a man can like to dress in flowery skirts and thongs.