Very pretty, I've always wanted an oscar. Had a lovely albion red in the store that made my heart melt it was so sweet.
Other SA cichlids do well with oscars, provided they have enough room for -their- territories as well as for how big they get. The best example I can come up with is my friend who had two full grown oscars in a 90 gallon with two full grown convict cichlids. That was it. And his albino still harassed everyone.
Jack Demseys, Green terrors, Tinfoil Barbs, Pacu, Bala Sharks, Convict cichlids, as mention before are good tankmates for oscars.