>>>I vote for the misuse of there and their and also weather and whether.
>>
>>As far as mis-usage goes, I think I've seen more incorrect "your" for "you're" with either variant for "they're" a close second.
>>
>>Far more pervasive, I think, is the use of "their" as a substitute for "his or her" singular possessive. I would not be surprised to see "official" grammar making this acceptable practice in the fairly near future. Strangely enough, I can't think of a commonly used equivalent for "he or she."
>>
>>My personal favorite pet grammar peeve is the use of "myself" as in "If you have grammar questions, just call Tamar or myself." ^%$#%^& (sound of fingernails on blackboard).
>
>Adding a grammar peeve - more ubiquitous than I ever thought possible. Heard frequently even when newsreaders are reading from teleprompters.
>
>"Congress will try and solve the problem ..."
>
>AAAAGH !

Sadly slipping into nearly all English now. I don't know about the US but here people will say, for "That needs to be put away": "That wants putting away".

Another bad one is: "I'm smarter than what I was a few years ago" Double AAAAGH !