I thought Franco Nero was the perfect Lancelot. He alternated between emoting smouldering passion.....and emoting the torture he had to go through to conceal that smouldering passion.
I agree with your opinion. Before seeing this movie,I saw "Excalibur" and I thought Nicholas Clay was the perfect Lancelot at that moment. but I changed my mind,Both of them are perfect Lancelot:) (I prefer Richard Harris to Nigel Terry as the King Arther)
I can understand Guenevere couldn't stop falling in love with him. Mr.Franco Nero was very attractive as Lancelot.
I thought their forbidden romance made the story excellent. I envy you because you saw him in real time,I wasn't born yet!!