There wasn't any complete set of skins for HDTV'S users of the madmab's emus, so i completed one myself (Thanks to my good friend Waal who convinced me to take the time to share them with previews)
I post here a zip with all the 28 emus covered; you should find them in the download section of "www.emuxtras.net" soon.
Very fine if you like having an uniform look for all your skins (and especially if you are using the XTRAS, because when displaying triple MEDIA BOXART/VIDEO and TITLE at the same time, the screen is already satured with colours; yes usually the boxarts are super colourfull, so that's why i prefer a monochrome of various blue style for displaying the xtras) long story short, here's the set (each skin has its own emu specific mp3 music):
Atari 2600 (Z26X)

http://www.megaupload.com/?d=J5CZZZQH
Atari 7800 (A7800X)

http://www.megaupload.com/?d=W0LV8Y4X
Colecovision (ADAMX)

http://www.megaupload.com/?d=UXHYK12Z
Atari 5200 (Atarixlbox)

http://www.megaupload.com/?d=YNW0MKKA
Atari 800XL (Atarixlbox)

http://www.megaupload.com/?d=DG45XMD1
Atari XEG (Atarixlbox)

http://www.megaupload.com/?d=95SYFXXT
Intellivision (BlissX)

http://www.megaupload.com/?d=WUPEASC8
MSX (bluemsxbox)

http://www.megaupload.com/?d=OQJ98NP7
MS DOS (dosxbox)

http://www.megaupload.com/?d=6XNU597Y
Lynx (mednafenX lynx)

http://www.megaupload.com/?d=ZTW205TM
NES (mednafenX nes)

http://www.megaupload.com/?d=G37DO3NL
Pc Engine (mednafenX pce)

http://www.megaupload.com/?d=ET3IXHR0
Master System (mekaX)

http://www.megaupload.com/?d=Q7LDBO7R
Game gear (mekaX)

http://www.megaupload.com/?d=HJRYJMXF
Megadrive (neogenesis)

http://www.megaupload.com/?d=RNVRGRGB
megadrive 32X (neogenesis)

http://www.megaupload.com/?d=M6FZ9VPP
Sega CD (neogenesis)

http://www.megaupload.com/?d=7UD7VGEB
Neo geo pocket (neopopX)

http://www.megaupload.com/?d=Y1UEWO5J
PSX (pcsxbox)

http://www.megaupload.com/?d=GJZ57KVI
Super nes (snes9xbox)

http://www.megaupload.com/?d=L1QBMTKQ
Virtual boy (virtualboyX)

http://www.megaupload.com/?d=AKPNVR0J
Atari ST (WinstonX)

http://www.megaupload.com/?d=G89EDNQ0
Amiga (WinuaeX)

http://www.megaupload.com/?d=A3GMHU25
X68000 (X68000X)

http://www.megaupload.com/?d=8JZ6JFDC
Game boy advance (Xboyadvance)

http://www.megaupload.com/?d=FFWXZQGT
Game boy Color (Xboyadvance)

http://www.megaupload.com/?d=8N5QN827
Game boy (Xboyadvance)

http://www.megaupload.com/?d=K98JW2H6
P.S.: Those skins are for the HDTV users ONLY!
They have been created with 1280*720 background in mind (720p); it should works fine on any HDTV (lot of testing with mine for texts/Xtras to appear properly)
oh, and try the "triple view 4" (go into skin configuration/load skin config) if you have HQ boxarts, it will be extremelly sharp!
Example of Triple view 4 (you must keep in mind displaying triple media at the same time requires good contrast, at least in my opinion, in an HDTV)

Edit:
Bonus for the new surreal ce users, system SDTV and system HDTV skins to fulfill the set (it also displays the boxart at the bottom in the same time if you have Cbagy's 3d boxarts in the folder):
Nintendo 64 (surreal CE)

System HDTV download link:
https://rapidshare.com/files/3247310901/Sys...y_Gilou9999.zip
System SDTV download link:
https://rapidshare.com/files/1255997699/Sys...y_Gilou9999.zip