I only just started watching Samauri Champloo recently and saved episode 1 on my Tivo so eventually I could get around to capping this bit and posting it. I needn't have bothered, since simply typing "samurai champloo bouncing breasts" into google and clicking the first result turned up the attached gif, which is better quality than anything I'd have capped.
BTW, those aren't actually her breasts under there... she's smuggling fireworks. Bit of a shame really, since she makes a nice impression that way.
0e798974461858c8c0a53d9a438feaf4 bouncing "breasts" (fireworks) in ep1