Two words: Jason Statham. He of Transporter and Crank fame... but, who prior to those movies, caught my eye and fancy in "Mean Machine", an hilarious Brit flick on my favourites list. Check it out if you can find it. In the Expendables, there are some other actors involved, but this guy is worth the price of admission alone.
For my quick review, please pardon my language in part, albeit in abbreviated form, and used only for the purpose of hyperbole. This movie has: motorcycles, Somali pirates (yes there are pirates in the modern day naval world), a BFG, some splitting human parts, a rather uncomfortable, if not funny, Bruce Willis and Arnold scene, a Statham knife fight, a very cool plane used to great effect in causing a BFE, a sensitive Mickey Rourke scene with a close-up (agh), a cool black truck, a Li and Lundgren fight (could the little guy have win?), waterboarding, a bigger BFG, a rather ridiculous quantity of closely spaced explosives, some more BFEs, a very well done Stallone and Steven Austin fight sequence, and a bit more stuff. So if one or two tense moments or scenes come across as somewhat constipated, we, as the audience will forgive those as well.
Bonus: There is a gag reel and a great behind the scenes look.