I've got open office installed right now. i install it for all my clients. it's awesome. i like it much better than star office. well the star office i tried that was like 2 yrs ago. i'm not sure how much they've improved it since.
For the normal user, there is
absolutely no difference between OO and So6.0. I used the different builds of OO (641was the last one before I switched to OO 1.0) as well as SO 6.0 Beta and now SO 6.0 (I didnt have to pay a cent, thanks to my school's site licence!!)
The only difference I noticed was that SO has a lot more templates for Text/spreadsheets/Presentation.
OMG, do they think they have a chance at selling this suite?
YES. A lot of corporates would prefer to use SO since they have a support plan and coz M$ is showing us how lousy it can get.