This can include theming, atmosphere and so on. This doesnt really apply to flats but more coasters, water rides etc.. This applys to AT rides only.
My favourite ride station has to be Oblivion. The atmosphere inside the station is awesome with the loud bass, the tvs over the track and the theming is great, and right before the train dispatches they play the clip on the tv with the lord of darkness.
As far as theming goes, TH13TEEN has to be the best. The station is fabulous and the surrounding area and queue line is great. However, for atmosphere, I agree with Oblivion, with the bass and TV screens, it gets you right in the mood.
I have to say I love how air makes a song and dance out of every departure and so it should with such a brilliant/complicated method of dispatch, I find air is the easiest station just to stand in because I love watching the crafts as they assume the position. As for atmosphere I have to say I really love thirteen and duel, I honestly wouldn't be able to choose a favourite.