Sinclair is a good character, and a really hard one to play well. There are times when I think O'Hare is a little wooden, but then again, so is Sinclair! lol

Plus, the times I often find Sinclair to be at his worst, it's down to the script, and the actor having to translate it onto screen.

Sheridan... My memory is that I liked him. I like the dopey golden retriever description, very apt, and also what I liked to some degree. Very different character to Sinclair, which was needed, and helped take thinks in interesting directions.