I think the LEGO games franchise qualifies for sure.
Are they all actually masterpieces/great, or are some just decent fun?
If I had to throw anything out to the original question, Shining Force would be my vote, SF 1,2 and 3 are great, the GG/CD games are really good too. (This doesnt include the Shining spin offs)
I can't speak for the two Valkyria games on the psp (or vita), but 1 and 4 are pretty awesome