About to buy a PS3

We're planning on purchasing a PS3 this week. It's primary use will be for watching discs and streaming video with some gaming. Now that I started looking at what the big box stores offer I am not sure what it is I am suppose to focus in on.

The game titles mean nothing to me. I don't mean that I am not interested, it just is that I have no idea what to expect or what is good. I've played Halo on a friend's xbox back in 2005 and arcade games in the 80's.

There are different hard drive sizes. I don't know if this is important or not but I do know there are different prices depending on the hdd size.

Some come packaged with a remote but it doesn't appear to function with TV's (I have an LG LCD). Is a remote needed?

They appear to come with one controller. I would prefer two. Do these packages come sealed from the factory or do the stores make their own bundles that they would be willing to swap a game for a controller?

Thanks for the input.