Here are a variety of examples. Click on various links, look at their program for affiliate/partners and contrast and compare. Soon I will have a site demonstrating how to use the smaller buttons and text on a sidebar.
FranklinMint

Free Shop
rotating 88x31 (same size as franklin mint)
small like franklin

Free Webtools!
eletter box 125x125

Hallmark
box 150x200
warner bros 250x75?(does't say WB)


Warner Bros. Studio Store
text (says WB)
hollywood.com
150x50

125x`25
bixbuyer

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DirectONE travel and longdistance services
rotating banners 468x68
468x68 ubid.com

Search Banners:
nice 4anything.com search banner/search appr 125/banner approx100
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banner rotate 4 anything (468xx68)
text verio
Verio Web Hosting Services
ubid text
uBid