What features do Canons have that Nikons do not?

I was contemplating a switch to Nikon for a little while, but Canons have one crucial feature that I cannot live without for my style of photography:

The ability to Memorize and instantly return to a pre-determined AF point,

http://learn.usa.canon.com/resources/articles/2011/1dx_af_pts_article.shtml?categoryId=121

This allows me to set a back-button to AF-start at the memorized AF-pt, independent of the position of the currently-selected AF point (which is still linked to the shutter-half-press). So at any time, I can either focus the currently-selected AF pt, or the memorized AF pt, and toggle between them instantly if necessary.

The orientation linked AF feature is also very handy, and as indispensable as the above. These alone keeps me in Canon's camp.

Are there any other cool features you like about Canons (that Nikons don't have)?
Another one off the top of my head is the comparison/dual view in Playback mode.