I also used to use:

if (condition &&
    condition &&
    condition) {
    code
}
[download]

But I didn't like the effect of conditions having the same indentation level as the subsequent code (since I also use 4 column indenting), making it difficult to discern the condition from the code, at least at a first sight. So from now on, I think I'll use the other construct:

if (condition
 && condition
 && condition) {
    code
}
[download]

that was unknown to me :^).