For many of us, part of the fun of having an Android phone is yanking off the intended software and putting a community-built custom build into the ROM. Sometimes, it's almost necessary to fix a few "broken" things the OEM is dragging their feet on (hello, T-Mobile G2X!), but more often than not it's done either to add features, take away features, or because it's a whole bucket of awesome inside of big box of coolness -- in other words, fun as hell.