The third series of medical drama Where The Heart Is aired between March and July 1999.
The first episode 'Expansions' features a unique version of the titles that is only used for the one episode to hide the fact that Neil McCaul and Melanie Kilburn had joined as cast regulars. They are credited on the main titles from the second episode onwards and also feature in the montage of family photos thereafter for the remainder of the third series.
Here is a comparison of the two versions of the title sequence used - can you spot the subtle (and not so subtle differences?)