Watching NBA has already done enough, regarding what I have to learn in order to understand it. Like, when I first heard the "Seven footer" phrase and, mainly because I was really young, understood it like "The commentator is just joking with that player's ability and is using the word foot to show us that the player should better go play football". :P
Then again I think that it improves our calculating ability when having to do the "FG-3PT=2PT". :D