This is an interesting example of how the changing definitions doesn't change reality. 'Singularity Institute for Artificial Intelligence' sounded all future-y to me, and 'Machine Intelligence Research Institute' sounds all technical and intelligent (silly stereotypes), but in reality they've not changed. Still the same people, doing the same things.
Gonna have to change the site name, though...
The Machine Intelligence Research Institute indeed sounds like some older guys, maybe cranky but well accomplished in the field, working on something... That is until you find star trek reference.
http://singularity.org/blog/2013/01/30/we-are-now-the-machine-intelligence-research-institute-miri/
As Risto Saarelma pointed out on IRC, "Volcano Lair Doom Institute" would have been cooler, but this is pretty good too. As the word "Singularity" has pretty much lost its meaning, it's better to have a name that doesn't give a new person all kinds of weird initial associations as their first impression. And "Machine Intelligence Research Institute" is appropriately descriptive while still being general enough.