Yeah, I can't understand her sometimes also. Maybe some props for writing songs, but on that same note, her songs are all from the same mould.
Outrageous clothes and influence? Honestly I wasn't aware that she is that "famous", Freddy Mercury wore better clothes, also Cher, Madonna. If anything, she's only a poor imitation.
Singing? Meh, average, to slightly trained, plus on the records anybody can sound decent these days and besides there's so much effects on the album version it's hard to tell who's singing what.
Heard that piano version of Pokerface before and only thing you can take from that is that it shows how shallow the song actually is and that she really can't change the song up a bit nor can she modulate her voice that much.
@Miracleofsound: please don't compare Lady Gaga to James Brown, Jackson or Armstrong.