The only depth Death Note had was in the cross of what was right and wrong, and it didn't do well at that. I will admit it was entertaining at first, cool little thought, and some thought was put into TRYING to make it seem like it wasn't straight shounen, but it was. replace DBZ power ups with wooooorrrrrrrrrrrds and there you go.
Otoshimono ep 1 was sort of funny, so far (as in ep 1) not a terrible start for an ecchi series.
Sasameki Koto though, i mean for real, i can't stop watching. The amount of lesbianism in this show is far too great to turn my eyes from.