Andrew Buckle is undoubtly the most prolific author of Photoshop compatible filters alive, these 3 filter sets mostly create blur & artistic color effects & are demos with the 'ok' button disabled (hint: hit the enter key). His website is a must visit with numerous commercial filters and effects for Photoshop, Paint Shop Pro, Illustrator, Xara etc. And he posts a constantly changing array of demos & freebies.