It is pretty magical the way the hacking scene has opened up the Wii.
I mean I look at what Nintendo wants you to do with the system, and then what we've done with the system and its night and day.
All the great things done on the Wii:
-Emulators, so many emulators, just about everything up through the N64 working beautifully.
Given handhelds do up to the PS1 quite happily and others before it have even made a stab at the N64.
-USB loading of Wii and GCN games
GCN maybe given the way things worked on the gamecube and the attendant issues of fiddling at hardware level in real time but otherwise not so much. Equally some of the stuff done to make up for the 3x loading speed in non chip/bad cable chip DVD loaders I can get excited about.
-DVD playback, a feature never meant to be utilized on the Wii
Lawyers and licensing did that one- the MPEG LA is not a cheap date. Given that the 3x read speed stuff existed as did prerelease stuff on the matter, "never meant to be utilized" might be a bit strong.
-Media (music, videos, picture viewing, comic viewing, etc.) playing via USB and SD
For what amounts to a static file it really does not matter what it reads from. Also mplayer was well developed and used in things like XBMC before it.
-Homebrew, lots and lots of homebrew, so much homebrew, so many great entries
I love hombrew and there is probably a large amount of evidence on the site to demonstrate that. True technical marvel.... less so.
-Quadforce (sucks this discontinued, still the ability to play both Mario Kart GP games is pretty amazing)
Mad respect for crediar and all but going for the true technical marvel bit I am not so sure.
-ALL DLC for games like Rock Band and Just Dance via EmuNAND
Given data can come from anywhere I am not so sure I should stand in awe at it all.
-Wiiware installing
I like discussing security bypasses as much or more than the next guy but I am not sure it ranks as a technical marvel, indeed it is not even much of a high end security bypass (install time check, no other protective measures really worth speaking of).
-Cheat codes
For my money doing it on a wii like setup is less amazing than doing it on a DS or another non multitasking system.
-The ability to implement new models and programming for games like Super Smash Bros. Brawl, or custom NSMB games
It is called ROM hacking and has been going on for decades or more (see POKE codes) at this point. I admit some of the loading methods are somewhat novel (abusing exploits to do it) but nothing truly groundbreaking.
-And the list goes on and on and on