I might catch some flack for this, but whatever. It was a pretty nice day today and I wanted to listen to The Mamas and Papas. Sure they can be considered cheesy or uncool or whatever, but their first 4 albums are all great. I'll stand behind that statement for sure. Great vocals, great song selection, etc. Just have some fun, guys.
If You Can Believe Your Eyes and Ears (1966)
Their only bonafide "classic" album. Features the hits "Monday Monday" and "California Dreamin" but is a great vocal pop album regardless. You'll know the songs before you hear them and be able to sing along by your second spin.
The Mamas & The Paps (1966)
This has their rendition of "Dancing in the Street" as well as one of their absolute best songs "I Saw Her Again" which could be an early Beatles classic. More of the same, great 60s pop with a slightly more garage sound.
This one sounds like an album that would've come out in 1967. Features some pretty fun covers and expands their sound slightly to incorporate a little more psychedelic influence. Another great one, maybe my favorite.
The Papas & The Mamas (1968)
This was the last album during their first run. Definitely more experimental and sounds like a complete album. Slightly darker (though still very much pop), more sophisticated feel to the record, but features more great vocals as always.