pet peeves!? now you've got me started - in no particular order:

2. irregardless
3. wreck havoc [for wreak]
4. your/you're (its/it's, their/they're)
5. flustrated [conflating frustrated/flustered]
6. to/too/two
7. excessive anthimeria (i.e., verbing of nouns)
8. orientate
9. (see previous post)
10. "in no particular order"
11. unnecessary apostrophes (e.g., CD's :)
12. misuse of linguistic terms by supposed experts;
e.g., Lederer listing "cleave" as a contronym
13. excessive and pedantic sesquipedalian verbiage
14. verbage/verbiage
15. confusing 'i.e.' and 'e.g.'
.
.
17. mute/moot [it's a mute point]
.
.
.
37. excessive use of the ellipsis