Watched the first episode, and struggled with it. I found Jerry O'Connell a bit over the top, and couldn't take him seriously, and also couldn't stop comparing it to the excellent Castle. Wasn't sure whether to bother with another episode, but really glad I did.
This isn't a serious crime drama, and if you can get past that it's actually pretty good. It's a little silly, it's a bit light hearted, and it's just good fun. A very easy watch.