Let us begin with the best/worst Whitney joke we know (mostly because we like any excuse to whip it out).

What's Whitney Houston's favourite type of co-ordination?

 

HAND EYYYYYYYYYYYYYEEEEEEEEEE-IIIIIIII.

 

Admittedly, that one makes for a much better joke if you deliver it in person and sing it out loud.

Christina Aguilera stopped by Ellen to give her a bit of an update on her life and career and after that Ellen engaged her in a standard game of 'Heads Up!', except that it wasn't so standard as it was all famous diva singers that Aguilera had to impersonate.

Now if we're being picky, the only ones that she made the effort with were Adele and maybe Whitney, but we do always appreciate a good belt from Christina so we're not going to complain too much.

Here's the Ellen/iPad's eye view of the game, which shows off just how powerful Aguilera's voice is up close.

Via Ellentube