I have to admit, that's the classiest flame I've seen in a long while. Vulgarity these days is just so, well... vulgar
. It's obvious, it's mundane, it's boring.
I didn't actually comment on US Legal shows in general, I commented on one specific show, so it's a bit naughty of you to phrase your question like that. Here in the UK, Boston legal pulls down an audience of about 100,000 - 150,000 people and is shown at weird hours by one of the minor channels - I wouldn't even class that as cult viewing.
I know plenty of people who know of
it or watch it in passing, though. But still, William Shatner remains far better known - here, anyway - for his Star Trek