My current obsession is with Rihanna at the moment.

The Name Game - Shirley Ellis
At Last - Etta James
Dreams & Everywhere - Fleetwood Mac
Ease on down the road - MJ & Diana Ross

In the past have had:

Winger- Miles Away
Firehouse- When I Look Into Your Eyes
Pink Floyd- Learning To Fly
Alice Cooper- Poison (but this is my favourite song ever so I have phases of wanting to hear it non-stop)
Robbie Williams- She's Madonna
Maroon 5 & Rihanna- If I Never See Your Face Again
Madonna- Take A Bow/Crazy For You
Fat Larry's Band- Zoom
Jordin Sparks- Battlefield
The Saturdays- Work
Rascal Flatts- What Hurts The Most
Will Young- Light My Fire
Boyzone- Baby Can I Hold You

But that's all I can think of for now

and mine is Robbie

Thought of some of my others

Break My stride- Mathew Wilder
Same old scene- Roxy Music
Mystical Experience- Boyzone
American Boy- Estelle
Ordinary World & The Reflex- Duran Duran
Licence To Kill- Gladys Knight
Living Inside Myself- Gino Vanelli