I just read in this months Road & Track there are a couple of foreign cars that have electric motors on their turbos to keep the lag down. I don't have it handy but I believe Hondas is one.
Edit It's not Honda, it's Mazda. Mazda is starting (hasn't got a project number yet)work on a replacement for the RX-7 with a rotary. Mazda engineers are working full time on the RX-8 rotary to improve low end performance and efficiency (cleaner emissions)with the turbo. They added an electric motor to add boost on the low end and on the top end the turbo works as usual. This maybe continuing development from the RX-8 Hybrid seen at the 2003 Tokyo Motor Show. Honda is rumored to be working on something similar.
Larry
