How do I get copies of my w2's from 2008 so I can file my taxes. I do not remember all those which I worked and was mving and did not receive them.

Contact your employer. Contact IRS.
If this does not work, then you may need to contact Social Security Administration.

You can also tax transcripts from the state tax departmenst in the states where you worked. Those transcripts should include complete copies of the W-2s.