these are my current peeves:

1) 'notoriety' used to mean 'fame'. as in athletes gaining 'notoriety' when they first win a medal at the olympics - have heard it FAR TOO MANY TIMES recently on the radio to be a coincidence - AAARRRRRRGGHHHHHH!!!!!!!!
2) 'begs the question' to mean 'raises the question' or 'suggests the question' etc - drives me BONKERS!!!!
3)using 'in terms of' ALL THE TIME when it is COMPLETELY UNNECESSARY. for example, 'in terms of it's size, the building was tall' and 'the program had been successful in terms of increasing the use of sunscreen among australian children.'