Fitting 2 PCI Cards into a 1U Case?

Joane Lispton asks: "I would like to ask the Slashdot crowd if they can help me do the following: I want to fit a x86 motherboard, two drives (Maxtor HD and CD-RW unit) and _two_ PCI cards into a 1U case (plus fan & power supply). Is this feasible? I was wondering whether there is some sort of "L-shaped" adapter that allows you to place PCI cards PARALLEL to the motherboard... Any tips are greatly appreciated!" I distinctly remember something like this existing for ISA cards, (it plugged into the normal ISA slot and had ISA slots that mounted parallel to the motherboard). Has a PCI equivalent been introduced?