You can watch some of the early interviews from the combine on NBA.com. So far they have McLemore, Zeller, Mohammed, Porter, Oladipo, Burke, Schroeder, and Dieng.
Only a couple are on youtube from what I can see so I won't bother posting them here. Personally, I thought Oladipo's interview was the best. Schroeder, Dieng and Burke also came across well. McLemore and Porter were both "meh" AFAIC, neither seem to have much confidence speaking and seemed to be rehearsed (nothing necessarily wrong with that, but I'd prefer some spontaneity). Mohammed doesn't seem very bright and did nothing to change my mind about him. I didn't even watch Zellers.
Some other observations - Mohammed looks about two inches taller than both Oladipo and McLemore, who appear to be roughly the same size. I don't think there'll be a big difference between Mohammed and Porter at the measurements. Oladipo has the personality and attitude of a star, he's confident and a born leader. I'm not sure he has the skills to be one, but he'll certainly help a team out a lot, especially considering he's one of the best defenders I've ever seen at college level, and that's not an exaggeration. His lateral quickness is unbelievable, and he has the length, strength, speed and jumping ability to accompany it. He's an elite athlete, and that
will be true of him in the NBA, you can quote me on that. I'd be so tempted to take him and out 'Reke back at PG, just to have a beastly defensive backcourt. And Oladipo isn't a guy that needs the ball in his hands to be effective. Wade isn't a bad comparison - not as good offensively but a better defender.
Just some observations - more in depth interviews will be taking place over the next few days with much more prospects. I wish McLemore was more confident, he doesn't seem to have the personality of a star despite his undeniable talent. Maybe it will come with time.
EDIT: Just found this Oladipo workout video after making that post:
Having watched it, I wouldn't be surprised if some of his offensive talent had been hidden at Indiana. He could easily turn out to be a top 3 player from the draft. I think people aren't doing him justice with the Tony Allen comparisons (although defensively that's obviously a huge compliment, it's still one I think he can exceed).