Each time I come away with the same opinion. Google's Document.app is awful.
Try selecting a table embedded within another table row.
That's just the start. Document.app has lots of missing functionality. It's not stuff that's technically impossible to do in Ajax, it's just that Google isn't doing it.
Spreadsheet.app is not nearly so bad. You can even edit it on an iPhone. Unlike, say, a Google Document.
I don't get how people pretend this is some kind of alternative to Word. I am, to put it mildly, no fan of Microsoft Word. Even so, I can't delude myself for a nano-moment that Google's Document.app is in the same class as Word. Especially not Word:Mac 2008*.
It's weird that anyone pretends otherwise.
* I've only recently begun using this version of Word. I am disturbed by the suspicion that I might like it.