Well if ya don't change your tagline thing you could use...
<img src="http://sp1.yt-thm-a01.yimg.com/image/25/m4/2895442572">
Or here is another that might work...
<img src="http://sp1.yt-thm-a01.yimg.com/image/25/m1/2071772373">
Or...
<img src="http://sp1.yt-thm-a02.yimg.com/image/25/m2/2489879503">
Or my favorite...
<img src="http://sp1.yt-thm-a01.yimg.com/image/25/m8/3994068514">