Just to clarify, ONLY the second player will be able to freeze enemies by pointing at them. This is the biggest addition a second player can bring, and it looks to be significantly helpful for the parts I have seen it used.
Edit: Also there is a gameplay video floating around out there where the second player is able to completely nuetralize fireballs flying at mario, not just freeze them, but completely brush them away as in gone and done for good. I suspect the extent of the second player's abilties might be a bit more than we know quite yet, and it could end up being more than just simply a gimmick for a non-gamer to help. Even if the help is minor, I have gone through M64 and Sunshine a few times with friends trading off on stars so it would be kewl to have both people doing something the whole time.
PS - Am I the only one who prioritizes their most wanted list by release date? Right now MP3 is riding the top since it is next to come out, but there are a number of PC games coming out soon that I am stoked about too!








