I suppose there are other types of teardrops, but these solved the
particular problem I had (copper cracking on inside corners during
rework).
I liked tape ups with curves.
You'll like PCB's global puller, at least, when it doesn't scribble
all over your board ;-)
Here's a sample board that uses both teardrops and the puller:
http://www.delorie.com/electronics/usb-gpio/