Director Wedge (also the voice of Scrat the squirrel) crafts a smart, sophisticated and touching animated comedy/adventure about a group of prehistoric beasts who find a human baby and then try to restore the tyke to his tribe. During the long march south during an ice age, the cuddly Manfred the Mammoth (Romano) and Sid the Sloth (the already animated Leguizamo) are joined by Diego the scheming Sabertooth Tiger (Leary) whose bond is solidified after the two save Diego's life. Amazing computer-animation technology and artistry are top-notch. Characters are likeable but sometimes spew overly glib dialogue. Although not quite of the same caliber story-wise, this one fits right in with "Shrek," "Monsters, Inc." and "Toy Story."