Oncidium ID please.
 

Picked this bad boy up at the farmers market. Not sure what sp. of oncidium I'm dealing with. Any input would help.

There are lots of similar hybrids, so you can't tell without a tag. It is sure pretty.

First, great catch, it's beautiful! It is an intergeneric hybrid of the Oncidium tribe, enough of them look similar that I don't think an exact ID is possible. Fortunately the care for all of the variations on the theme is similar - indirect light, keep on the damp side, house temperatures (or a bit cooler) are fine.

I have something very similar. Mine is (at least theoretically) an Oncostele (Wilsonara) "Firecat Jamaica Nice", or at least that's what the label said. It looks identical to yours, bit I got it at a grocery store and the are not very careful with the labels. Care is exactly what Roberta said.