Along with the Ubuntu Community Theme, I’d added ubuntu font to my LaTeX installation. Just get the Ubuntu Fonts Family, from fonts.ubuntu.com , unzip the file and then run

autoinst --encoding=T1,OT1 --verbose Ubuntu-BI.ttf Ubuntu-B.ttf Ubuntu-I.ttf Ubuntu-R.ttf
mkdir -p ~/.texlive2009/texmf-var/tex/latex/Ubuntu/Ubuntu/
mv *.fd *.sty ~/.texlive2009/texmf-var/tex/latex/Ubuntu/Ubuntu/
texhash ~/.texlive2009/texmf-var/

You then just need to add \usepackage{Ubuntu} to your document.