I was able to watch the pilot. It was decent. I give it an 8/10. There were a few instances of bad/cheesy dialogue/moments (I found myself rolling my eyes a lot), but overall, I thought it was a solid introduction to the series.
Barry is easily the most likable character. Gustin plays him wonderfully, and possesses an infectious energy that will make you smile every time he's on screen.
Iris is pretty much Laurel done right. Patton also brings a lot of energy to the episode, and remained funny and charming throughout. The only thing I didn't like (and I acknowledge that neither the character nor the actress is at fault for it) was the decision to [BLACKOUT]make her and Thawne an item.[/BLACKOUT] 
The supporting cast was okay. Jesse L. Martin was the standout. He has one great scene that will punch the audience in the gut. The villain was forgettable. He had little screen time and was the definition of generic. 
Danielle Panabaker was okay; she didn't have much to do. Carlos Valdes (or rather, his character) was slightly less annoying than I thought he would be, but I do mean slightly. Tom Cavanagh had more to do than both, and turned in a decent performance. 
Rick Cosnett wasn't in it much. He did okay with what little he was given.
The Oliver Queen cameo was really nice, but very on-the-nose. It was kind of cheesy, to be honest. That said: there is a really nice exchange towards the end of the scene that makes up for it.
All in all, it was a decent pilot, like I said. There were a few really cool easter eggs (one of which you'll spot immediately) and you'll be very likely to turn off your television with a huge smile on your face. I think we've got a winner here. 
If I had to give the creative team some advice? Cut back on the cheese. Just a little bit.
Also: if you're into drinking games, invite a few friends over to watch the episode with you and take a shot every time someone utters the word "impossible".