Are you sitting around twiddling your thumbs today? If so, here's a suggestion: Head over to videogamesarerad.com and check out the site's "12 Days of Famicom" posts.
These posts cover a wide range of Famicom-related (obviously) releases and topics, from the Family BASIC add-on to promotional Famicom Disk System titles (All Night Nippon Super Mario Bros. specifically) to Punch-Out!! Special (swoon).
I've read each entry about five times already, so I'll be spending my day doing something else--like scanning the catalog at gameofjapan.com.