Ok, so we are going to have people saying "It's just a copy of the Wii!" ... and I have to agree that it does have many similarities. However, PS3 has brought High Definition gaming (and movies via Blu-Ray) into the home and it is capitalising on Nintendo's great job done of bringing motion controlled gaming to the masses.
I have a Wii in my flat, right next to my PS3. When it does get played, it's fun, it's interactive, it's different.
Nintendo managed to bring this generation of console gaming to the whole family, but more hardcore gamers found the Wii a bit tiring and unfulfilling. The games were aimed at the younger market and those that were for a more adult audience still weren't up to scratch.
The shift from the Wii to the PS3 is inevitable.
So far, from what I have seen via the PlayStation GDC press conference, the focus of the PlayStation Move is very much in precision.
The demoed games, both family and "gamer" types, are looking good. In particular, I'm liking the look of a street fighting game called "Motion Fighter" (working title) (see YouTube video below).
One of the comments on this video is "wii HD=playstation move". I'm assuming they meant this as a good thing, because the interactivity of the Wii mixed with the quality gaming of the PS3, all in HD... It's a great time to be a gamer!