Michael Oliver is 10 times better than any of the other refs in the PL. You hardly notice him in games, which is a very good sign.
He let's the game flow, but still manages to keep control, and doesn't allow it to get nasty. Very good referee.
I seem to recall a few bad ones from him, but yesterday was a good game, something I can't recall thinking in a very long game (e.g. the ref for Villa was awful)
Every time I watch Palace I get reminded of how fudging annoying it is to watch Zaha play, the guy went down from a tussle with Gil