I actually went out for dinner last night. First time in a long time I did that.
I wanted a burger, so I went to the local sports bar, which generally has very good burgers and very good wings. I just had a burger and fries, as I was jonsing for a burger. Turns out it was a burger special, and my burger, fries, and drink were less than the regular priced burger would have been.
The waitress was good, quick and attentive, so I tipped her $5 on a bill that was $11.49 total.
I've got no problem tipping for actual service, and she wasn't standing over me, holding my food, and demanding that I "tip more" before she'd set it down.