"I'm good at three things; fighting, screwing, and reading the news."

I can break things pretty good.

Burping

I can fuck up a relationship like nobody's bidness...

Pissing people off.

Today I am Really good at NOT punching Smart mouthed Engineers .

I am really good at my job. Really good at it.

Ooh, good one... Today I was good at not inadvertantly cold-cocking the weird lady at our office who has a nasty habit of sneaking up behind me and running her fingers through my hair.

She soooo wants you!!

So what do you think of the thread title?

'At what are you good' sounds weak.
I believe in ending sentences with prepositions. However, I also applaud you for grammar naziing dar512.

I am:
An excellent marksman.
Great at scratching itchy parts.
Extremely talented at being selfish (not proud of that one, though).
Smooth under pressure at work.

Usage note The often heard but misleading “rule” that a sentence should not end with a preposition is transferred from Latin, where it is an accurate description of practice. But English grammar is different from Latin grammar, and the rule does not fit English. In speech, the final preposition is normal and idiomatic, especially in questions...

Those are mine too! The pissin people off is probably my best attribute - I can do without even trying - thats shows what a real talent it is.

Accompanying vocalists at the piano. I've spent a lot of my professional life backing up singers, and I have a pretty well-honed sense of how a vocalist will approach a song, which makes me pretty good at providing a musical foundation for their performance.

Figuring out how new things work. I'm a "throw away the manual" kind of guy, and can usually go from not knowing something exists to being able to master it pretty quickly.