Graph makers/plotters. What program do you like/use?

[flambus]

Excel doesn't seem to have the features I need, or at least they are well hidden.

 

[SaltBoy]

I don't know if it's still out, but I loved working with Mathematica long ago.

What kind of graphs are you trying to make?

 

[ShadowHunter]

my TI-83+ is pretty good