Pretty panniers might be a tough one. For the most part, they are very utilitarian and many of them black! What kind of use will you give them? Do you envision taking them off every ride? Since I use mine for commuting and shopping within a short distance, leaving the bike locked in a public space, I chose simple, ugly and cheap, wire baskets ($13 a piece). Here are some options for fancy panniers:
Colorful:
http://www.rei.com/product/604989?vc...HP_CYCLING_TOC (I like the yellow ones...)
http://www.rei.com/product/749150
http://www.arkel-od.com/panniers/bac...asp?fl=1&site= (back pack style)
Vintage looking canvas panniers:
http://www.velo-orange.com/ospa.html
http://www.velo-orange.com/baka2pa.html
http://www.wallbike.com/berthoud/panniers.html
PS: A picture of the wire baskets: http://forums.teamestrogen.com/showp...2&postcount=30