Pretty much anything by John Deacon would fit in nicely, but the aforementioned 'Millionaire Waltz' is a pretty good place to start. 'Another One Bites the Dust' ain't bad either, along with the one that inspired it - 'Le Freak' by Chic's Bernard Edwards (one of the best bassists of all time IHMO). Geddy Lee's work on 'Snakes & Arrows' was pretty impressive too and if fretless bass is your thing, check out Pino Palladino's work on 'Music For Chameleons' by Gary Numan
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GM