Use /usr/bin/env, it's more portable.

convertSnip.py

@@ -1,4 +1,4 @@
-#!/usr/bin/python
+#!/usr/bin/env python
 """
 File: convertSnips.py
 Author: Michael Sanders

snippets/c.snippets

@@ -30,7 +30,7 @@ snippet #if
 # (the randomizer code is taken directly from TextMate; it could probably be
 # cleaner, I don't know how to do it in vim script)
 snippet once
-	#ifndef ${1:`toupper(Filename('', 'UNTITLED').'_'.system("/usr/bin/ruby -e 'print (rand * 2821109907455).round.to_s(36)'"))`}
+	#ifndef ${1:`toupper(Filename('', 'UNTITLED').'_'.system("/usr/bin/env ruby -e 'print (rand * 2821109907455).round.to_s(36)'"))`}
 
 	#define $1
 

snippets/perl.snippets

@@ -1,6 +1,6 @@
-# #!/usr/bin/perl
+# #!/usr/bin/env perl
 snippet #!
-	#!/usr/bin/perl
+	#!/usr/bin/env perl
 	
 # Hash Pointer
 snippet .

snippets/python.snippets

@@ -1,5 +1,5 @@
 snippet #!
-	#!/usr/bin/python
+	#!/usr/bin/env python
 
 snippet imp
 	import ${1:module}

snippets/ruby.snippets

@@ -1,6 +1,6 @@
-# #!/usr/bin/ruby
+# #!/usr/bin/env ruby
 snippet #!
-	#!/usr/bin/ruby
+	#!/usr/bin/env ruby
 
 # New Block
 snippet =b

snippets/tcl.snippets

@@ -1,6 +1,6 @@
-# #!/usr/bin/tclsh
+# #!/usr/bin/env tclsh
 snippet #!
-	#!/usr/bin/tclsh
+	#!/usr/bin/env tclsh
 	
 # Process
 snippet pro