General Stuff:

$AE ($200): Sprite Palette Presets
  8 bytes for each preset
  If the first byte of the preset are abouve $7F
  The Palette Page used is (Value - $80)
$2F179 : Level Mid/Boss-Point datas
  Offset = $2F179 + (level x 6)
  From that offset are 6 bytes of data:
    0: Mid-Point Screen Position
    1: Mid-Point Scroll Map Position
    2: Mid-Point CHR/Palette Preset (dunno how it works)
    3: Boss-Point Screen Position
    4: Boss-Point Scroll Map Position
    5: Boss-Point CHR/Palette Preset (dunno how it works)

37C92: HP for each Enemy
37DC2: Effect Type Data for each Effect Sprite 
37E66: is a table of 2 and 2 bytes that tells what CHR to swap
3DC36: Palette Animations - Palettes
3D4CA: Location of Sprite Palette #0
3DD11: Offset Table for each Palette Animation ID
3DD31: Palette Effect Frame Table (Adress = OffsetTable(Animation_ID))
3DD32: Palette Effect Speed Table (Adress = OffsetTable(Animation_ID))
3DD33: Palette Effect Palette Number Table (Adress = OffsetTable(Animation_ID) + frame)
3DDC3: Offset Table for each CHR Animation ID
3DDCB: CHR Animation Data (look in Offset Table for ID's offset)
	+[Frames] = Number of frames for CHR Animation
	+[Delay] = Delay for CHR Animation (0 = Fastest)
	+[Segment] = Switchable CHR Bank to animate
		0 = BG-CHR 00-7F
		1 = BG-CHR 80-FF
	+[Banks] = Wich VHR Bank to use in each Frame
	...

37DC2: Type Data for each Effect Sprite
	00-0F: Palette Animation
	10-7F: CHR-Swap
	80-FF: CHR-Animation
37DF2: Pal-Anim Type for each Effect Type ID (if type is $00-$0F)
	80->: Use value as Palette Anim ID
37E66: CHR-Swap for each Effect Type ID (if type is $10-$7F)
37E7E: Starman CHR-swap, Tile 00-7F
37E7F: Starman CHR-swap, Tile 80-FF

Various Stuff:

E279: Gravityman's Movement Speeds
E556: Movement Speed for Waveman's Hook Attack
E595: Waveman's water attacks - randomily picked X-location bases (8 bytes)
E5DB: Time Waveman uses for his water attack
2492A: Megaman's Slide Face Position Y
2492B: Megaman's Slide Face Position X
2D06E: Wheel Sprite Properties
38590: Waveman's Y Movement Speeds
3859A: Waveman's X Movement Speeds