Howe's artistic style has always affected me the way that Roger Dean's fantasy art did when he became well known via his album cover art for music groups like YES. Of course the styles are different, but both artists have the ablility to totally transport you to other worlds that you've never seen or imagined before. Howe's worlds are often visually soft and feature dream-like fogginess, but are no less powerful for it.
I highly recommend this book to artists, and he also has a website that is worth visiting regularly. Among other great features on his site, you can send e-cards of his work but I haven't done that yet so I don't know if it's a free service or not.