Who's the old dude?

That's Harve Presnell

He also played Lois Lane's(Teri Hatcher) dad on Lois and Clark the New Adventures of Superman

You can find out more about him here:

http://us.imdb.com/name/nm0696193/

Who is the other guy in the picture. Is this like the pilot picture?

most likely this is a picture from the pilot episode. Sometimes what happens is a pilot episode is shot and the network orders changes before they pick it up as a series. Sometimes they will recast parts, such as they did w/ the role of Charlie Ted McGinley was not the first choice, he came in after someone else was repalced. And the old guy was a character that must have been taken out. sometimes networks wil ask writers/producers to change scripts and get rid or characters they think serve no purpose or hurt the show. my hunch is thats what happened.

I have a huge video clip of the original pilot, with the original cast(the grandpa, different dad, and different kids).

Here is the video:
http://www.sitcomsonline.com/videoclips/hopeandfaithpromo.asf

They should have kept the old cast! Looks much better!:)

I think the father is Michael O'Keefe, the former Mr. Bonnie Raitt and the guy who played "Fred" on Roseanne.

Actually, it's not. I just watched the promo

I miss the first sydne. Megan Fox stinks.

That Blond girl (Sidney) doesn't look like the original. Is MF the third (sidney)?

I think they should bring the Grandpa on, it might help ratings.

I'm glad they changed the cast, don't like the original cast, how come in the pilot episode, Justin is played by a different person, who i must say is even worse than the one they have now.

I love the pilot episode where hope and faith fight with the sauce and food, so funny. Glad they didn't pick that cast though, don't like the grandad