One way to distinguish yourself is to publish your work in a journal.  Here are links to journals that publish undergraduate students' work:

 

AGORA PAPERS

http://glasscock.tamu.edu/agora/papers.html

 

Undergraduate Research Community (URC)  

Undergraduate Research Journal for the Human Sciences

http://www.kon.org/CFP/cfp_urjhs.html

 

KAPPA OMICRON NU HONOR SOCIETY

http://www.kon.org/CFP/cfp_gfa.html

 

The Journal of Young Investigators

http://www.jyi.org/submissions/

 

RUR Reviews in Undergraduate Research

http://www.ruf.rice.edu/~rur/submit.htm

 

BETA BETA BETA

http://www.tri-beta.org/bbbawards.html

 

Journal of Undergraduate Sciences

http://www.hcs.harvard.edu/~jus/submissions.html

 

Journal of Popular Culture

http://www.blackwellpublishing.com/journal.asp?ref=0022-3840

 

CUR Journal

http://www.cur.org/