There were, but only one of them (Endgame) fits in nicely and also brings Connor back to tie elements of the two halves together in some way. The Source is pretty awful.
I actually like Endgame. Mostly anyway. It has some lovely sequences that really fit in with the spirit of the series, and the "modern" portions of the movie have the style I prefer to see. The music was good. The direction was good. The cinematography was good. You get the sense that they TRIED with Endgame. Sure it's undone by stupid Highlander-ish decisions -- the bad guy has a stupid posse made up of bad acting and little else, and they tried to channel Kurgan, again...and they really muddle Connor's story -- but it's not so bad. And it's got Methos and a realistic evolution of Duncan.
The whole "head count" thing in Endgame is dumb because it doesn't make much sense and it kinda cheapens the character of Duncan, who by sheer force of will and skill with a sword defeated many older, more experienced immortals during the series and could've eaten Jacob Kell for breakfast, no sweat.
And this is part of the problem. The best villians Highlander ever had were Kalas and Xavier St. Cloud. They weren't over-the-top blusterers, they were clever. They were skillful. They used their wits and they were truly dangerous. The movie villains are just cardboard silliness. If Highlander is ever rebooted, they need to go back to villains like Kalas.
As for the Source, the less said about that, the better. It was so damn bad I hardly remember it. And it stands as a testament to why new people are needed if Highlander gets a reboot. First, they were stupid enough to make loads of merchandise with the title of the movie years before there was even a script, so even though the concept was retarded, we were stuck with it. Second, we all thought the involvement of Adrian Paul as producer (with script approval) and David Abramowitz (who wrote some of the best stories of the series) meant that it would be gold.
Except...everyone forgot that it was Abramowitz who had a hard-on for the post-apocalypse storyline and was determined to write one after his original idea for the series' 6th season was rejected. And it became clear early on that Adrian Paul was NOT pleased with the script or the shoot, but he probably said "Fuck it...we came this far and waited long enough, let's just do it."
Well they did. And the result was horrible. Instead of more Endgame, we got utter garbage.