The only one I still remember was the button in Space Quest I escape pod that when pressed ejected you through the time-space warp into Kings Quest I and then killed you on impact :)
When i saw Loom it is the first thing that came into mind. 2 weeks ago i found the old CD (dating from 1992) that is still in perfectly good shape, i don't know how i kept it for so long. It is one of the best games ever made. E C E D.
Smile Son of Signa,
It is the dawn of your 17 years. The Elders are awaiting in the sanctuary. (From memory)
There's a pretty good bundle on Steam that has The Dig and Loom in it (and both Indiana Jones games I think). I never caught The Dig when it came out so I've been playing through it lately. Loom was an absolute favorite when I first played it (I think I was 11 or 12?). Mind-blowing. Probably internet-common knowledge but in case you're not aware of the Double Find Adventure kickstarter, it's worth knowing there's a studio working on a new point-and-click adventure for those of us who were (or still are) ravenously obsessed with the genre - http://www.doublefine.com/dfa
http://store.steampowered.com/app/32340/