In addition to the peeves mentioned already, nothing drives me more insaner than the double comparative!

Except possibly (and I thought I was going to be safe saying this as gasharootie had tsuwm locked away somewhere, but I see he's back! ) the use of momentarily to mean 'in a moment'.

Tsuwm, my dictionary is not only British (Shorter Oxford) but an old edition. I'm sure you have a US source to defend your usage - do you have any international ones, or is this purely a North American usage?

And sorry, even if you quote me a source, I'll still hate it! This is beyond rational. I only ever hear it on planes about to land, and it always makes me wonder how the passengers are all meant to get out in that single moment...