I've been looking for the demo too. No luck.
I like this version of "A World Without Love" made by the Beats, an Argentinian band that imitates the Beatles:The Beats - A World Without Love
I always feel that Mike Myers based Austin Powers on Peter Asher.
Eh, that version is too jerkey. The drummer needs to do something except for using the back beat. Needs to flow a little more in my opinion. Sound wise, they pretty much nail the Beatles though.