We get a TON of junk mail. A TON. But now and then there's some "good" junk mail, like free samples or certain catalogs.
DH loves the Harbor Freight catalog (they have all sorts of things from air tools to car ramps to power tools to flashlights, you get the picture - man stuff).
Some of my absolute favorite catalogs are Plow and Hearth, the LL Bean annual Christmas catalog, and the Vermont Country Store catalog. The big giant Cabelas "Master Catalog" is a good one too.
Incidentally, have you ever seen the Vermont Country Store catalog? They have some of the coolest and weirdest stuff in there - like: Ear Wax Remover device, Prune Wafers, Anti Monkey Butt Powder (?!?), Provincial Print Mumu, Scrapple, and a light for your cane. Stuff ya don't see every day. Or at least I don't!
Do you have a favorite catalog you just have to look at when it comes in the mail?