For Houston's newest millionaires, Wednesday was a day of television appearances and newspaper interviews, back slaps and congratulations. Joyce and Uchenna Agu — a married couple racked by layoffs, unable to get pregnant, immersed in debt and on the verge of breakup — basked in the glow of their Amazing Race win. Many of us have suspected what it might be like to win $1 million, and Joyce confirmed our suspicions. "It felt good," she told the Chronicle. Good enough to quit your jobs? "Whoa, whoa," said Uchenna with a laugh. "It's only a million bucks, buddy." "Only" a million,...