Reigning Champ Recycled Fleece Crewneck - considered by many to be the Cadillac of sweatshirts. And since I own one, I'll go ahead and agree. Handcrafted in Canada (probably the best thing to come out of that country, save Steve Nash). There are a few left at Haven.
Universal Works Heskin Sweatshirt - UW is a British outfitter who focuses on producing clean lined, honest menswear. The Heskin is a testament to their mission. The olive version is pictured above, but it's also available in red, royal, and a few other colors. The highlight of the Heskin is the contrast pigment-saturated elbow patches (not seen above). Oi Polloi still has some stock.
Alternative Apparel Eco Fleece Raglan - I love these guys because A) They're environmentally responsible and B) They're economically priced. You can get your own for 40 bones. Clean, classic, and understated - these things rule. Variety of colors available at Unionmade.