Does it still have its uses, or is it just a waste of money (i.e. I should just do all my video titling, effects overlays, etc. in a modern PC editing program)?
It still has a use, for starters its easier to title a video using a genlock than it is to digitalise it and then analog-ise

it
You can also do some cool shots mixing 3D lightware stuff with real life vids (an x-fighter flying over the croud at a fair) but people just dont like them any more and now most Amiga's are RTG most cant use Genlocks so the price is bound to go down.
I have to say although I own a Genlock I never found a cool program to make use of it, they were all just so grown up.
