Solyndra and Fast & Furious definitely don't qualify as "major" scandals, which I interpret to mean Teapot Dome/Watergate/Lewinsky- level (did Iran-Contra turn that key?) Key 5 we probably won't know for several months. I suppose Key 8 could turn if Occupy Wall Street continues and escalates into something more serious.
This.
And as far as foreign/military success, I can think of at least four without even trying:
1. Killing Osama Bin Laden and Anwar al-Awlaki
2. Libya campaign
3. Iraq War Drawdown
4. START