Dude, different categories completely. Danika is five feet tall and annoying as hell. Andrews is a real woman with real, well, my mother-in-law is a HUGE Irish fan and she reads this site, so I'll leave it at that.
Although I'm not a fan of her nose, just youtube a clip of her on Dancing with the Stars, I actually watched that show once to see her in her outfit, errrrrr, to watch the artistry of dance. And unlike Danika, she is a girl you would want to hang out (her heard on a Bill Simmons podcast and she's great...knows sports, loves sports, and can take and give some jabs).
I'm not real big on sideline reporters (really...what do they add?), but she's one I can at least stomach.
As for Gameday, I agree...too long. But the first hour will be on ESPNU, then they'll switch it over. I think the real issue I have with this whole thing is that the OP, Shaq, didn't even include Erin Andrews in the title of the thread!!! Who cares that CGD is going to 3 hrs...the story is that Andrews has joined dude!