[gpurkins]

http://en.wikipedia.org/wiki/1000_Genomes_Project

Here's the project explanation, but the data itself is 1000 complete (hopefully!) genome sequences. The hope is to find the variants, be it single nucleotide differences, copy number difference, etc. Where I work we use it to help figure out SNP (single nucleotide polymorphisms) to see if something we sequenced is a mutation or just a variant with no effect.