I just wanted to send you a quick thank you note for your help during my job search over the last several months.    As you can imagine I was contacted by too many recruiters to count, but I did want to thank you specifically for your ongoing support, as I felt you were one of the people that invested time and effort in helping me with my career.  The time you spent prepping me before the interviews was very helpful for me, and although I felt at that time I was a pretty seasoned interviewer, I really appreciated your critiques.  I am sure we will continue to keep contact in the future as well, and in the not so distant future I will be looking to hire some people into my team.