The TBC Classic talent calculator
Nine classes, three trees each, read from the game client's own tables. No transcript, no video, no typing: a tooltip the pipeline cannot fill from the game's numbers does not ship at all. Set a build, share it as a link, and press Simulate to see what the points are worth in damage.
Pick a class, then spend the points — one a level from 10 to 70, so 61 of them, with a tree's next row opening at five points in that tree. Simulate runs two combat simulations on the same gear, one with your points and one with wowsims' published build for the spec, so the only thing that differs between the two numbers is the talents. The build rides in the address, so copying it shares exactly what is on screen.
How it works, in full: How the TBC Talent Calculator works.