Many years ago, I was surprised to find out that XTerm can also emulate a vector-based tektronix terminal.
The only application for it that I found was a previewer for TeX's dvi files that could render on the Tektronix terminal by drawing a lot of tiny horizontal lines.
If you liked the tektronix emulation, also have a look at sixel graphics [1], which also work in an xterm. Helpful if you are logged in via ssh without X forwarding, and need some graphics...