Move a bunch of ical events at once I have got all the dates and times for my class seminars set in iCal, and I've also made week-long events that coincide with my colleges week numbering. 

The thing is, I forgot to let out this Easter holidays, which are two weeks that should be blank. 

What I want to do is select all events and move them two weeks. How can I do that?
Fast forward 7 years! iCal is now Apple Calendar.

You can now select multiple events and use the keyboard shortcuts:

⌃⌥ [ ↑ | ↓ ] to move the events 15min sooner or later.

⌃⌥ [ ← | → ] to move the events 1 day (in day/week view) or 1 week (in month view) sooner or later.