From Sweet 19 Blues: Let's Do The Motion, Rainy Dance, I Was A Fool, and I'll Jump IF you've already heard the single tracks.
Concentration 20: Pretty much everything but the instrumental which I think is titled I Know...although I'm not sure cause I always skip the instrumental...but for me everything else is a gem!!!
Dreaming I Was Dreaming was ONLY featured on her single, and her 181920 best album, it's a GREAT ballad, one of the songs that got me into her older pre-Genius 2000 era.
Genius 2000: Respect The Power Of Love, Leavin' For Las Vegas, I Have Never Seen, Something 'Bout The Kiss, I really like Things I Collected and Asking Why as well
Break The Rules: A lot of people say it's her worst album...but I beg to differ seeing as the new mixes on S19B sucked!!! So this is a step ahead of that album, anyways good songs are Break The Rules, Never End, Please Smile Again, Girlfriend(Almost all in english except for maybe 2 lines in the choruses, and No More Tears. Think Of Me is good too, but the version on Love Enhanced~Single Collection~ is by far 20x better than the original!
Say The Word/Lovin' It: Say The Word original and new mix on LE~SC~ are both GREAT!! and the b-side on the Say The Word single I like titled Let's Not Fight. Lovin' It was used as a charity single I think, and was a collab with Verbal and I'm pretty sure her last work with TK, nonetheless it's a good song.
Suite Chic: Lot's of goodies on this one, What's On Your Mind, Damn Fight, Ain't Yours, Sing My Life, Uh Uh..., Good Life, Just Say So, Not This Time, Without Me, Signs Of Life, honestly I loved every song on this album except for the interludes.
Style: Namie's Style really does set the tone for this album, Put 'Em Up, Indy Lady, Fish, Lovebite, Four Seasons

, Gimme More, and Come were great as well!!!
Queen Of Hip-Pop: Honestly I have not much to say, just listen to the whole album, first one that got me into Namie, and the first one I bought!
PLAY: A jewel as well, same as QOHP and Concentration 20!
Best Fiction: Do Me More, Sexy Girl, New Look, Rock Steady, and What A Feeling.
Basically all of the songs I listed are imo her best from each album and such, the original mixes of her older songs are amazing compared to the crappy album mixes they received, anyways that's pretty much it, hope this helps!!!