Apart from their biggest hit, "Land Down Under," and the already mentioned "It's a Mistake" Men at Work's other biggest hits were "Who Can it be Now?", "Be Good Johnny" and "Overkill."
Great to see a thread about these guys, I loved the Business as Usual album when I was a kid and I think it still holds up pretty well. They had a third and final studio album in 1985 which was not nearly as good as the first two but still had two decent songs, "Maria" and "Everything I Need."
My favorite song by them is the 6 minute mini-epic "Down by the Sea." Men at Work wound up prepping for liking the band Television later in life. To me Television sounds like the best Men at Work stuff without the Australian accents. They share the same tight, catchy and quirky pop sound, unique vocal styles and super clean guitar tones.