It depends what you mean by 'blah' lyrics, there are certainly some metal bands with excellent lyrics. I'd point out My Dying Bride, Agalloch, Acid Bath, Edge of Sanity/Dan Swano, Cruachan and a few others...What is it you object to though? Lyrical prowess or subject matter? If it's the latter there's not much hope for you liking metal lyrically. Even Skyclads approach doesn't stray too far from the metal subject matter approach. Look at how they sing about environmentalism in 'The Disenchanted Forest' or the human condition in 'The Sinful Ensemble'.
Metal is simply about dragons, motorbikes, satan, rage, mighty swords, grief, ice, forests, zombies, elation, trolls, violence, smiting, rampaging, explosions, brotherhood, vampires, hailing shit, serial killers, might, darkness and so on and so forth. It's a complete opposite, as I think Jeph has pointed out in another thread, of hipsters singing witty little numbers about the sex life of a spork. And that's why it is so damn awesome.