I've got 11.04 installed now on my laptop (HP DM1), and it runs pretty well, all graphical nobs and whistles work well as far as I can see (i like the wibbly-wobbly windows ).
It even sucessfully upgraded from my previous 10.10 install which was done via Wubi, and I wasnt sure if that would update correctly or not (ie with grub etc), but can confirm that it works this way.
I also am liking unity, and certainly give credit for them trying a graphical shell environment which thinks in a different way to Windows, however i'm not 100% convinced that its better than gnome. Maybe i just need to become more familiar with it...
Now if only they will work with Valve to get Steam on it with a few games (doesnt have to be anything dramatic, porting Defense Grid will make me happy) then I can remove my Windows installation (although i probably wouldnt anyway).