I got this Martha Stewart Charlie 4-sided Bolster with Ortho Base and Removable Cover for my dog a couple of weeks ago.  It has become his new favorite place to nap.  When he sleeps in this bed he just passes out and snores.  It's really cute and I know it has to be comfortable for him to sleep that hard.  I like the fact that it has a slip resistent bottom so it doesn't slide around when he jumps in it and has a removable cover so that it can be washed.