California's corrupted governor. Ran as a reformer, and seemed like he might actually at least partly mean it. Then, he was either corrupted or let his true nature show and he turned into a George W Bush/Michael Bloomberg/John McCain-style "moderate Republican". Certainly, some of the examples of him being "moderate" aren't that bad and are supported by most Californians, such as some of his support for environmental initiatives. However, other examples of him being "moderate" are actually examples of him opposing the wishes of most Americans and now supporting policies that have greatly harmed the state, such as Schwarzenegger's support for illegal immigration.
Whatever the cause of him becoming "moderate", he's completely corrupt now. Instead of taking on people like former Assembly Speaker Fabian Nunez - someone who occasionally acts more like a paid agent of the Mexican government than a representative of American citizens - Schwarzenegger collaborated with him and his friends and capitulated to the far-left California legislature. Some of that may have been due to personal ambition, and he might actually believe he could have a political career after governor (Senator Schwarzenegger?) Some of that may have been due to influence from the national GOP leadership; note that he hired a Bush-linked campaign strategist to help his re-election. And, no doubt, part of it is due to the influence of his wife, Maria Shriver.
Note that, like Bush and a host of other corrupt GOP leaders, the "Governator" supports "comprehensive immigration reform". Not only that, but he's helping banks profit from money that was earned illegally.
He's also a dual citizen with Austria, so perhaps he might consider a future political career there instead of here.