Here's a biblatex solution with a properly formatted bibliography.
\documentclass{article}
\usepackage[style=alphabetic,sorting=debug]{biblatex}
\DeclareFieldFormat{labelalpha}{\thefield{entrykey}}
\DeclareFieldFormat{extraalpha}{}
\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@misc{whatever,
author = {Author, A.},
year = {2001},
title = {Testing the effects of biblatex styles on bibliography formatting},
}
@misc{B02f,
author = {Buthor, B.},
year = {2002},
title = {First},
}
@misc{B02s,
author = {Buthor, B.},
year = {2002},
title = {Second},
}
\end{filecontents}
\addbibresource{\jobname.bib}
\nocite{*}
\begin{document}
\printbibliography
\end{document}

(The filecontents environment is only used to include some external files directly into the example, so that it compiles. It is not necessary for the solution.)
natbibanyway? – Jan 07 '11 at 09:43natbib, I just tried to use it in order to produce the desired result. I'd be happy to do it without it. – Dror Jan 07 '11 at 09:52