In every build since r6931 (6934, 6940, 6941, and 6942 as of this post) , the Wiimote connection code has stopped working for me. Either it just doesn't work or Dolphin crashes to desktop when it tries to initialize the Wiimote. (I'm using the x64 builds from the download page.)
Edit: Fixed in r6943. Thanks!
Edit: Fixed in r6943. Thanks!