In PoT, obviously, it's tennis, and the best thing ever is watching Ryoma stand on a court and just radiate* how much he loves playing. I love how this is a show about growth and change, how at the beginning of the series Ryoma really didn't get loving tennis, and now he does.
I think this also has a lot to do with how PoT is so pairings-various, because virtually any two characters in the show can have the following exchange:
Character A: "Tennis?" *holds out fist*
Character B: "Fuck yeah, tennis." *fistbops*
*and i don't mean radiate in the gay golden pair sense either, although in some cases it's applicable.
In other news, roddick :( not like the sony tournament is hot shit, but still. I'd have much rather watched a real match between him and Murray.
ETA: have just realized that the brand of DVD i have the Rikkai Arc burned onto says "FOR DATA" on it. ahahahahaha DORKLOVE.