All-time pet peeves:

"Epic"
"...totally."
"Awesome"
"F***!"
"Fail"
"The $hit"
"Dude"
"Like..."
"So, like..."
"So cool"
"Donk" - Apparently, every 1972 Chevy Impala on Craigslist - regardless of whether it has 22" rims or not - is to be classified under this term.
"Duh"

People say that valspeak (Valley Girl dialect) died in the 1990's - that's a load of crock. It's more prevalent now in mainstream conversation than ever before - furthermore, men (excuse me - "guys," not men) are now equally at fault for using it.

-Kurt