I was looking through Mozilla.org's Add-ons archive looking for a solution to Firefox's infamous 100% CPU Usage "bug" and I came across this:
Bork Bork Bork!
by
Anthony Howe View web pages or mail as spoken by the Swedish Chef like this:
"Feeoo veb peges oor meeel es spukee by zee Svedeesh Cheff."
...It can also be used to completely block undesirable URLs from ever loading within web pages...
(
Click here for complete description...)
So it's like Adblock (which solves the CPU bug if you didn't already know), but it also puts zee chocolate on zee moooose.