see "Top 10 Supreme Court Decisions That Should Be Reversed"
http://www.humaneventsonline.com/lists.php?id=11560
Here, from Human Events Online, is an interesting list of Supreme Court cases which scream to be revisted and overturned.
Although this won't be popular with my true "conservative" readers, here is the modification I would make:
Replace their #1 (Roe v Wade) with the 1938 case United States v. Carolene Products Co in which (via the opinion's infamous "Footnote Four") the Supreme Court explicitly said that it would not exercise strict scrutiny over economic and property-related laws passed by Congress. It is this inexcusable abdication of their specific constitutional task which allowed the New Deal and which continues to allow Congress to regulate almost anything from marijuana to milk to guns as "interstate commerce".
You can find more information about the travesty that was the Carolene case at:
http://en.wikipedia.org/wiki/United_States_v._Carolene_Products_Co.
and http://www.agh-attorneys.com/4_us_v_carolene_products_company.htm