I haven't been to Shabusen for a few years.  You cook your own food on the table (either grill or hotpot- you choose) and they bring you as much raw food as you want.  Plus as much sushi, salad, teriyaki chicken, gyoza etc. as you want.  It's a pretty good deal.
 
 Anyone been to Samba's?  They have an all you can eat BBQ meat thing.  I haven't been there.