A random list of groups and musicians I enjoy listening to (depending on my mood):

Josh Groban (of course!)
Backstreet Boys
The Corrs
ABBA
Beatles
Elton John
Sarah Brightman
Mostly Autumn
Jaime Cullum
Katie Melua
Christina Aguilera
Eva Cassidy
Peter Jöback
Tommy Körberg
Paul Potts
...and many many more

In general, I like all kinds of music, from Classic and Opera over Musical and Pop to R'nB and Rock. Only things I don't like is almost all kinds of Metal, Rap and some Opera music.

Love many movies, so here is just a sample of my favourites:

Lord of the Rings
Wedding Crashers
August Rush
Stardust
Enchanted
Mamma Mia
Schindler's List
Happy Feet
Harry Potter
Eastern Promises
Disney movies