Sorry to say, I feel you could have done a lot better than this.
The intro was awesome, and it sounded really groovy, if I may be so bold. :O
One complaint I have is the blending of voices. They were funny, no doubt, but you know that the whole purpose of a demo reel is to show off your range and pitch first and foremost- once you finish doing that, then you can set your priorities on comedy, but it looks like you did them both at the same time, y'know? If the same formula was used with either two different people or one person doing two clearly distinguishable voices, it would be flawless, but there's still an obvious similarity in the two voices you have. The dialogue was cute, though.

The reason why I say this is mainly because, whenever I listen to a demo, if I hear one voice, I'm thinking 'Alright, this is good. I like his voice. The pitch is good, the emotion is good, he's great at enunciation,' and so forth. But once you pull a second character (that you may or may not be doing to show off range) it confuses me, especially considering how quickly you edited them talking over each other.
The bulk of the voices you showed off sounded similarly gruff, and the emotion scene sounded kind of fake. The 'c'mon, man, this isn't funny!' part sounded believable, but the 'Wake UP!' part kind of lost me, because it sounded like you were a little hesitant to get fully in-character. It made me think less of someone emotional and more like someone getting a little upset and shoving off someone like 'C'mon, let go of me!'
I really do like your voice, though. I can safely say you sound like a fun guy based on the way you made this. ;D