I've been working in the corporate world for a little over a year now (most of my career was in DoD). Some words/phrases I keep hearing people use that really annoy the hell out of me.

• Warm and Fuzzy - As in, "Lets just make sure we give <some customer/partner> that warm and fuzzy feeling."
• Action/Actioning - As in, "Someone needs to action that task" or "Who is actioning this item."
• Critical Path Item - As in, "We need to get this task completed soon before it becomes a critical path item." I know it's a project management buzz word, but I hate it.
• Bandwidth - As in, "Hey Mike. Do you have the bandwidth to work on project X today?"

Techies and marketing folks love to use buzzwords. Sometimes I can't even understand something as simple as a trouble ticket because the buzzword level is so high. When I get to be the maker of rules, the heavy use of buzzwords will be a punishable offense.

For more ranting, check out this beautiful screed on the use of buzzwords. And of course, I'd be a fool not to mention the Plain English Campaign.