I'm tempted to install Turbo Pascal for a deep nostalgia trip. I grew up in a small-ish town in Appalachia, and when I ran out of math classes to take in high school I started learning to program. They had put together a little "computer lab" circa 1990 when cash was a little easier to come by for a public school, and hadn't updated them since.

It was 2004, and their intro programming course was still taught in Pascal. We hacked on a version of Turbo Pascal that might have dated to when the Soviet Union still existed, and I remember that cheery blue terminal interface fondly. It left me with an irrational life-long love of text-based interfaces.