Unfortunately no. There's Cog which is a lightweight player with a simple interface similar to foobar, but its features are very basic. It supports FLAC though, so it's my player of choice when I want to spin lossless albums that I haven't converted to ALAC yet.
I'm still waiting for official FLAC support in iTunes or the release of a more flexible player like AmaroK or foobar, but I bet neither of these options will happen soon.