Yes, it's a "na-na" songs list. That is, a list of songs I've heard that have the phrase "na-na" in them. Each is quite memorable (at least to me), which sparked my belief that there are no bad songs with "na-na" in them. I think, though, that I managed to disprove my hypothesis quite successfully with my own contribution (see below).

AC/DC
Thunderstruck

Alfonso
Silvia's Na-Na Song

Beatles
Hey Jude

Berlin
Like Flames

Blink-182
Say It Ain't So

Blondie
Heart of Glass

Carpenters
Yesterday Once More

Cranberries
Ridiculous Thoughts

Dr. Dre & Snoop Dogg
The One and Only/Next Episode

Everclear
Wonderful

J. Geils Band
My Angel Is A Centerfold

Linkin' Park
Numb

Michael Jackson
P.Y.T. (Pretty Young Thing)

Natalie Merchant
Kind and Generous

Neal Hefti
Theme to "Batman" TV Series

Offspring
Self Esteem
Why Don't You Get a Job

Pink
So What

Roxette
The Look

Sheryl Crow
The Na-Na Song [you gotta love the title!]

Steam
Na Na Hey Hey (Kiss Him Goodbye)

Tears for Fears
Don't You (Forget About Me)