Also, Munchlax was really popular for awhile after it was revealed. It was the first DP Pokemon, it was in the Deoxys movie, it was a playable character in Pokemon Dash, it was in Pokemon XD and Pokemon Mystery Dungeon: Blue/Red Rescue Team, etc... And I remember seeing a lot of promotion pictures.
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http://i38.tinypic.com/2zqtqur.jpg
http://img255.imageshack.us/img255/1011/picture3e.jpg