Kind of like "Jumbo Shrimp" or "Microsoft Works"...
"Respected Lobbyist" does sound like a great oxymoron, doesn't it? I suppose a lobbyist might get respected if he/she is effective at manipulating politicians, but is that really a good thing?
"Military Intelligence" is a rather tired and less than accurate oxymoron. I argue that "Liberal Think Tank" is a bigger and more accurate oxymoron.
"Civil War" and "Holy War" are huge oxymorons.
"Government Worker" also strikes me as an oxymoron, at least based on much of my personal experience with the breed.