Tell your husband that! You might be surprised at how he would react to you telling him
"I'd love to see [you] have to work to turn ME on! I'd like to be pursued and seduced occasionally! Maybe [you] should wear the high heels and lingerie for awhile."
You could probably actually wind him up with such talk, and cause him to actually do something about it! If he is very reserved in that area though, you need to give him time. He may just feel very uncomfortable with taking the lead, rather than just being lazy and/or selfish. He might be afraid that you won't like what he does or says, and if he feels pressured he'll just get more afraid. If you think he might fit in this category rather than the selfish category, try complimenting him a lot, tell him "i love it when you... why don't you try..." rather than "why don't you ever...?!!!". If he feels relaxed about it he might be open to new ideas.
Good luck! :D
(ps. in the meantime, get a vibrator :p)