[Right Wing Assault]

Using "myself" when you aren't sure if it should be "I" or "me." "My wife and myself went to the game."

This one is almost universal: "We are going to try AND win" when it should be "try TO win."

Why not say, "We are going to win"? Or are you used to winning without trying?

Another that I never heard until a few years ago. Maybe it is regional. "My house needs painted." It should be "My house needs to be painted" or "My house needs painting" or maybe even "My house needs paint."

[Windflier]

"My house needs painted."

That one makes my skin crawl.

A more recent pet peeve, is when posters militantly refuse to capitalize the first letter of every sentence. I find it so annoying that I've begun scrolling past such posts.