Faroudja is, generally speaking, as good as it gets straight out of a consumer 'box' (be it within the DVD player or standalone). A lot, if not most, TV's deinterlacers aren't worth the marketing effort by all accounts.

The only way to really better Faroudja is with a carefully built HTPC running DScaler, which when done right has been known to better Faroudja's $20k units.