From an audiovisual standpoint, Bejeweled is only modestly impressive. Its jewel-shaped blocks look pretty much the same as they have on cell phones and computers for the past couple of years, the music is inoffensive, and the only special effects on display are cool 3-D tunnel-like transitions between levels. Similarly, its gameplay doesn’t hold a candle to a good game of Tetris, or even Sega’s Columns for that matter. But it’s…