All the time. Even though it's not technically video game music, I'm still humming half the Saints Row 4 soundtracks. Also do this a lot with Sonic and Ace Attorney music.

yeah me too.  i get lots of stuff stuck in my head if I start thinking about it.  I remember a lot of old tunes.  The one that first comes to mind is from Outrun.  I love that soundtrack. 

quite often, yes.

For sure. Also, Chessa used to hum Epona's Song all the time. I'd say for at least 4-5 years straight.

Probably the standard Mario/Zelda themes. Not much else

When I first bought Silent Hill 3 I had this song running through my head for a while. It's very Pretenders like

I have the Super Metroid Item Acquisition theme as my text alert, so I hum along nearly every time I get a text.

I have the Dark Souls Invasion sound as my text alert

Can't really hum that though...

No. Only time I do is when someone asks me what's that song in "insert game" here.

Yes. Much to Jason's annoyance.

Its easier to ask "When isnt a video game tune running through your mind." 

Yep.  It's usually the song from the first world of Super Mario 64 (N64).

If I do it's the SMB theme, but yesterday I was thinking about how the menu music from Star Fox 64 would be great in an emotional movie death scene, and how it would be cool if Nintendo released games featuring all the Smash characters that had storylines eventually tying into the tournament, kinda like Marvel/Avenger movies, but for video games.  

Ive been listening  to Zelda music like crazy these last few days and have def caught myself humming it at work.

Yep, usually some old Mario theme being the unique individual I am

Yes all the time I catch myself whistling the old Final Fantasy win battle music or the Bubble Bobble theme.

Ehhh, ive tried to whistle the mario bros tune (nes) but im terrible

Not that I can recall.

Yes,usually when I was the last kid on the bus coming home from school. Hopefully I did not freak out my bus driver with my renditions of SMB 3's "water world" and Dr. Wily's themes from MM 2. lol.

Yeah I'll even have dreams that have video game music in the background.

Super Mario Bros. theme and the music from the water levels. Those seem to be my go-to game themes.

Just last week I was humming and whistling the Mario theme. It's there in altered form in some places in Paper Mario: Thousand Year Door that I'm playing right now.

Super Mario Bros theme that is.

I have a great memory, so yes. Since VG music is basically all I listen to, there's always something playing in my head.

Most of the day, pretty much. Your typical first-party Nintendo stuff but a lot of other games too. Anything with a catchy melody.

Not that I remember. I think I might have sung Live & Learn from Sonic Adventure 2 because I do hum or sing songs with lyrics. That said, I have some game songs in my mind from time to time, like last night when I had the Cave Story theme.