All right. Great stuff 

I finally downloaded episode 5 last night and, this morning, I listened to it a few times (on repeat) as I grudgingly awoke.
1. I'm glad this is a themed episode. It's nice to have them every now and then.
2. I am particularly happy you chose some lesser-known tracks (SMS hidden stage, Amiga title screen, C64 original). Very nice tunes: The SMS tune was far more elegant than I remember it, the C64 SID (and remix) is mandatory since many folks here don't listen to SLAY Radio, and the Amiga tune--well, I had never heard it before. 
3. On that note, I had never heard the Gameboy tune before, either. 
4. 
3, 2, 1... Let's Go! This track from LEO was a treat. It sounds like a Pet Shop Boys B-side (which is a good thing, as far as I am concerned). 
5. The only way to have improved* on this episode: throw in a track, albeit Red Book, from PCE R-Type Complete!
*  I know this is an unpopular position to take. 
** 
3, 2, 1... Let's Go!